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1999-2004 Saleen Mustang For the SN-95 New Edge platform. Be sure to specify year, model and equipment if asking for help. |
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#1
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Long tube header HP gains?
I am close to finishing the final mods to my 03 and have decided to install longtube headers to help relieve some back pressure and increase flow. I have hit a plateau with my most recent mods and am convinced this will get things back on track. The headers i will be installing are ceramic coated Macs. Also, emissions testing is not an issue here, so I will be removing the cats and replacing them with a Mac offroad X pipe !
My tuner/buddy recently did this exact install on an N/A and he convinced me to pull the k memeber and come in from the bottom. The down side is that removing the front end will require and alignment when we are done. The good news is he will be helping for free, as he owes me several favors... I will post some pictures through out the process. I am anticipating seeing a decrease on the boost gauge and a nice gain at the wheels. I realize that most of us don't dyno between every mod, so I'd be surprised if anyone has done a before and after...just the same i'd love to hear your results or your best guess for your set up. My mods are in my signature and my most recent dyno puts me at 365/377. I know that might seem low to a few, so before we get into that same old arguement keep in mind that is SAE corrected and there is no such thing as a good air day @ 4000'. Even w/ a 2.80" upper pulley i am only making 10psi due to the air density (or lack of it!!). I'd be disapointed if i don't see 380/400 with the headers...thoughts??
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03S281SC 03-269 Tunable induction CAI|2.8 pulley|39# Injectors|05 Mustang GT pump|90mm MAF|75MM BBK-TB|Mosaleen idler|MAC Long tube headers|Mac Off road X|LFP-H/E and tank|Chicane I/C|5gpm pump|373 FRPP gears|NT555R 305/35ZR1|MGW shifter|FRPP Alum driveshaft|N2MB two step 86-0087 03-269 S281SC 92 LX coupe 92 LX convertible |
#2
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Sounds awesome man. I have bassani mid-lengths just sitting in my garage (for a year now). They were on my 02 N/A GT. I picked up 14rwhp on my N/A with no cats. I believe you should pick up 20+ with the S/C.
As soon as I stop being lazy and put these on my saleen, I will let you all know what my gains from the headers were. |
#3
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Quote:
Thanks, Scott
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03S281SC 03-269 Tunable induction CAI|2.8 pulley|39# Injectors|05 Mustang GT pump|90mm MAF|75MM BBK-TB|Mosaleen idler|MAC Long tube headers|Mac Off road X|LFP-H/E and tank|Chicane I/C|5gpm pump|373 FRPP gears|NT555R 305/35ZR1|MGW shifter|FRPP Alum driveshaft|N2MB two step 86-0087 03-269 S281SC 92 LX coupe 92 LX convertible |
#4
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Well I bought stage 3 heads/cams for $1200 2 years ago and this was thrown in to complete the deal. |
#5
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03S281SC 03-269 Tunable induction CAI|2.8 pulley|39# Injectors|05 Mustang GT pump|90mm MAF|75MM BBK-TB|Mosaleen idler|MAC Long tube headers|Mac Off road X|LFP-H/E and tank|Chicane I/C|5gpm pump|373 FRPP gears|NT555R 305/35ZR1|MGW shifter|FRPP Alum driveshaft|N2MB two step 86-0087 03-269 S281SC 92 LX coupe 92 LX convertible |
#6
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set up looks awesome. are you still running stock catback? post some exhaust vids once its all installed!
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#7
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Quote:
I will be sure to post a sound or video clip when i'm done.
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03S281SC 03-269 Tunable induction CAI|2.8 pulley|39# Injectors|05 Mustang GT pump|90mm MAF|75MM BBK-TB|Mosaleen idler|MAC Long tube headers|Mac Off road X|LFP-H/E and tank|Chicane I/C|5gpm pump|373 FRPP gears|NT555R 305/35ZR1|MGW shifter|FRPP Alum driveshaft|N2MB two step 86-0087 03-269 S281SC 92 LX coupe 92 LX convertible |
#8
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those headers in the pictures look so beautiful i don't know if i could install em on the car or put em up in a display case to just look at
ASh |
#9
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I need an additional O2 sensor for my wideband to monitor air fuel ratios. I added this bung to replace the current one i have.
There are four factory O2s. Two before and two after the cats. Even though the post cat O2s will be eliminated from the tune, i will replace them in the new x-pipe. This will require extensions on the wires. All this hassel is in case i go back to stock some day. Here is a close up of the new bung a friend installed...dude can weld!
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03S281SC 03-269 Tunable induction CAI|2.8 pulley|39# Injectors|05 Mustang GT pump|90mm MAF|75MM BBK-TB|Mosaleen idler|MAC Long tube headers|Mac Off road X|LFP-H/E and tank|Chicane I/C|5gpm pump|373 FRPP gears|NT555R 305/35ZR1|MGW shifter|FRPP Alum driveshaft|N2MB two step 86-0087 03-269 S281SC 92 LX coupe 92 LX convertible |
#10
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Ok...finally got around to working on the header swap. I did a before video of the exhaust that i will post that after the project is complete. Here are the pictures of todays work. The enitre process of removing the old exhaust and the K-member took less then 4 hours. Not bad at all!
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03S281SC 03-269 Tunable induction CAI|2.8 pulley|39# Injectors|05 Mustang GT pump|90mm MAF|75MM BBK-TB|Mosaleen idler|MAC Long tube headers|Mac Off road X|LFP-H/E and tank|Chicane I/C|5gpm pump|373 FRPP gears|NT555R 305/35ZR1|MGW shifter|FRPP Alum driveshaft|N2MB two step 86-0087 03-269 S281SC 92 LX coupe 92 LX convertible |
#11
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Nice pics! Keep us updated...
Couldn't help but notice your trust in those jackstands
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2004 S281 #50 - 492 rwhp, 494 rwtq (Sold) 1997 Viper GTS #123 (Sold) 1996 S281 #63 (Sold) 2000 S281 #108 (Sold) 1993 Cobra #2302 (Sold) |
#12
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Thanks, will do.
Don't worry... no hero here! What i lack in common sense i make up for w/ fear... haha!
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03S281SC 03-269 Tunable induction CAI|2.8 pulley|39# Injectors|05 Mustang GT pump|90mm MAF|75MM BBK-TB|Mosaleen idler|MAC Long tube headers|Mac Off road X|LFP-H/E and tank|Chicane I/C|5gpm pump|373 FRPP gears|NT555R 305/35ZR1|MGW shifter|FRPP Alum driveshaft|N2MB two step 86-0087 03-269 S281SC 92 LX coupe 92 LX convertible |
#13
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Quote:
Quote:
When you took the k-member out what did you use to support the engine? Just that single bottle jack?
__________________
My Build: http://saleenforums.soec.org/showthread.php?t=6881 Wind Deflector: http://www.saleenforums.soec.org/showthread.php?t=12930 |
#14
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nice work!! that k member looks HUGE... nice job on the removal. I would love to do the same but replace the k member with a maximum motorsports kit, or one like it to shave off some weight, and possibly go turbo! looking forward to the videos.
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#15
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Quote:
Thanks. Yeah its a pig! I'd guess an easy 200lbs and it would be a great place to shave some weight.
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03S281SC 03-269 Tunable induction CAI|2.8 pulley|39# Injectors|05 Mustang GT pump|90mm MAF|75MM BBK-TB|Mosaleen idler|MAC Long tube headers|Mac Off road X|LFP-H/E and tank|Chicane I/C|5gpm pump|373 FRPP gears|NT555R 305/35ZR1|MGW shifter|FRPP Alum driveshaft|N2MB two step 86-0087 03-269 S281SC 92 LX coupe 92 LX convertible |
#16
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While i was waiting on the gaskets i installed a 2 step launch control. I went w/ the N2MB.
Tonight i installed the the headers. It seems it would be impossible to install longtubes w/o removing the k member...should have time to finish putting it back together Saturday i hope. Here are some pics of the headers installed.
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03S281SC 03-269 Tunable induction CAI|2.8 pulley|39# Injectors|05 Mustang GT pump|90mm MAF|75MM BBK-TB|Mosaleen idler|MAC Long tube headers|Mac Off road X|LFP-H/E and tank|Chicane I/C|5gpm pump|373 FRPP gears|NT555R 305/35ZR1|MGW shifter|FRPP Alum driveshaft|N2MB two step 86-0087 03-269 S281SC 92 LX coupe 92 LX convertible |
#17
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looking good i think you will be happy with the gains especially after a retune
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00gt 10k on the clock saleen s4 blower and full saleen body kit. 2.76 upper, 42's , 90mm maf, 75mm tb, focus pump. high flow cats, stock gt exhaust, 31splines and 373's. best et without body kit was 11.9 at 116mph on et streets. 1.60 sixty foot. way more to come out of this combo sct tuned by me. |
#18
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LOVE my bassani setup.... Think your gonna like yours too!!!
Interested to see what you think of it since it since you already had the other mods.......I did all my mods at once, so my results are scewed!
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'03 SC Coupe (1 of 2) 380hp / 400tq @ 12lbs boost 18x10" rear wheel option 13" Saleen Brakes ◄ Chicane Intercooler ◄ 2.875" VI Xtreme Pulley ◄ 4" polished CAI 75mm TB ◄ Bassani Exhaust (Mid Length Headers, X-Pipe, Mufflers) ◄ FRPP 3.73 gears 90mm MAF/42lb Inj ◄ Ford GT Fuel Pump ◄ Rear LCA's ◄ Subframe Connectors + more! |
#19
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My **** dyno hasn't proved to be too accurate in the past and i havent driven the car at all since November. But i will give you my best guess for sure!
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03S281SC 03-269 Tunable induction CAI|2.8 pulley|39# Injectors|05 Mustang GT pump|90mm MAF|75MM BBK-TB|Mosaleen idler|MAC Long tube headers|Mac Off road X|LFP-H/E and tank|Chicane I/C|5gpm pump|373 FRPP gears|NT555R 305/35ZR1|MGW shifter|FRPP Alum driveshaft|N2MB two step 86-0087 03-269 S281SC 92 LX coupe 92 LX convertible |
#20
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Finished putting the car back together and loaded the new tune today. I won't be driving it until the roads dry up, but here is a quick video of the car after the longtubes and off road x-pipe were installed. The video is hard to see because its dark and you can tell its windy, but the sound is good enough to get the general idea. Note the 2 step at the end of the video. It's set @ 3900 rpm....enjoy!!
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03S281SC 03-269 Tunable induction CAI|2.8 pulley|39# Injectors|05 Mustang GT pump|90mm MAF|75MM BBK-TB|Mosaleen idler|MAC Long tube headers|Mac Off road X|LFP-H/E and tank|Chicane I/C|5gpm pump|373 FRPP gears|NT555R 305/35ZR1|MGW shifter|FRPP Alum driveshaft|N2MB two step 86-0087 03-269 S281SC 92 LX coupe 92 LX convertible |
#21
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Sounds great!
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#22
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Sweet! Wish I could run that set up...
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#23
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Nice sound! Please post the "before" sound clip so we can hear the difference.
Any idea on your gains?
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07 Porsche 911 Turbo 02 Saleen S/C Speedster 3.73 gears Chicane 66mm Pulley SCT custom tune SVT Focus Fuel Pump 13" Brembo Brakes LFP Heat Exchanger and Supertank TorkTech Intake SVT Cobra single blade TB Chicane Intercooler 42lb injectors 90mm MAF FPRP Aluminum Driveshaft Maximum Motorsports LCA's, Subframes, Torque Arm, Panhard Bar, Steering Shaft, Front Control Arms and Aluminum Rack Bushings MM Coilover kit with caster camber plates |
#24
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you will be there with a retune
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00gt 10k on the clock saleen s4 blower and full saleen body kit. 2.76 upper, 42's , 90mm maf, 75mm tb, focus pump. high flow cats, stock gt exhaust, 31splines and 373's. best et without body kit was 11.9 at 116mph on et streets. 1.60 sixty foot. way more to come out of this combo sct tuned by me. |
#25
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Quote:
Here are both videos. 2003 S281SC Stock exhaust 2003 S281SC Long tube headers and off road X-pipe
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03S281SC 03-269 Tunable induction CAI|2.8 pulley|39# Injectors|05 Mustang GT pump|90mm MAF|75MM BBK-TB|Mosaleen idler|MAC Long tube headers|Mac Off road X|LFP-H/E and tank|Chicane I/C|5gpm pump|373 FRPP gears|NT555R 305/35ZR1|MGW shifter|FRPP Alum driveshaft|N2MB two step 86-0087 03-269 S281SC 92 LX coupe 92 LX convertible |
#26
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you are prob correct wireman a few years back i tuned a car with a s4 blower on it with a stock pulley and fuel upgrades and kooks long tubes it was around 375hp 390 torque on a easy tune. your easy going to pick up 20hp, dont forget alot of times you have less heat too around the valves with long tubes and you can run a little more timing as well.
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00gt 10k on the clock saleen s4 blower and full saleen body kit. 2.76 upper, 42's , 90mm maf, 75mm tb, focus pump. high flow cats, stock gt exhaust, 31splines and 373's. best et without body kit was 11.9 at 116mph on et streets. 1.60 sixty foot. way more to come out of this combo sct tuned by me. |
#27
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Interesting point
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03S281SC 03-269 Tunable induction CAI|2.8 pulley|39# Injectors|05 Mustang GT pump|90mm MAF|75MM BBK-TB|Mosaleen idler|MAC Long tube headers|Mac Off road X|LFP-H/E and tank|Chicane I/C|5gpm pump|373 FRPP gears|NT555R 305/35ZR1|MGW shifter|FRPP Alum driveshaft|N2MB two step 86-0087 03-269 S281SC 92 LX coupe 92 LX convertible |
#28
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Drove the car tonight and here's what i noticed. The car comes on and feels stronger from mid to high rpm, with what seems like a decent gain on the big end (5000 rpm and up). Whats cool is that the boost comes in 1lb or so higher and peaks at 1.5 lbs less, so it is definately flowing better. I would typically see 10.5 lbs max and tonight i saw 9. Thats w/ a 2.80 upper.
Oh yeah...it's loud!
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03S281SC 03-269 Tunable induction CAI|2.8 pulley|39# Injectors|05 Mustang GT pump|90mm MAF|75MM BBK-TB|Mosaleen idler|MAC Long tube headers|Mac Off road X|LFP-H/E and tank|Chicane I/C|5gpm pump|373 FRPP gears|NT555R 305/35ZR1|MGW shifter|FRPP Alum driveshaft|N2MB two step 86-0087 03-269 S281SC 92 LX coupe 92 LX convertible |
#29
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hey wireman you should data log your car where it feels lazy down low i bet your timing is down at the load point.
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00gt 10k on the clock saleen s4 blower and full saleen body kit. 2.76 upper, 42's , 90mm maf, 75mm tb, focus pump. high flow cats, stock gt exhaust, 31splines and 373's. best et without body kit was 11.9 at 116mph on et streets. 1.60 sixty foot. way more to come out of this combo sct tuned by me. |
#30
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The car doesn't feel lazy in fact it picked up a bit on the bottom. What I'm saying is the majority of the hp gains we see from headers is at higher rpms and that is exactly what it felt like.
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03S281SC 03-269 Tunable induction CAI|2.8 pulley|39# Injectors|05 Mustang GT pump|90mm MAF|75MM BBK-TB|Mosaleen idler|MAC Long tube headers|Mac Off road X|LFP-H/E and tank|Chicane I/C|5gpm pump|373 FRPP gears|NT555R 305/35ZR1|MGW shifter|FRPP Alum driveshaft|N2MB two step 86-0087 03-269 S281SC 92 LX coupe 92 LX convertible |
#31
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Quote:
Before (Stock exhaust). (Start up/ idle) Bummmurrrrr.... (short revs) Vummmmurrrrrrmmmm.... vummmurrrmmmm.... (Going down the road) Muuuurrrrrrrrrrrrr.... (shifting) Murrrrrrrrrrrrrr... (second gear) Murrrrrrrrrrrrrrrrr... After (Saleen Magnaflow catback, Kooks long tube headers, off road X-pipe) (Start up/ idle) BAROOOMM... wabba, wabba, wabba, wabba, wabba... (short revs) Booooroooomm... Waahhh WAAhhhh WAAAHHHHHHHMMM!!!...) (Going down the road) MURAAAAAAHHHH.... (shifting into second and hammering it) chirp, BUUUUWAHHHHHHHHHHHHHHH!!!!! (going into third) chirp, BUUUUUAAAHHHWAAAHHHHHH!!!!!!!!!!!!!!! Hope that helped. You're welcome! |
#32
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Quote:
__________________
My Build: http://saleenforums.soec.org/showthread.php?t=6881 Wind Deflector: http://www.saleenforums.soec.org/showthread.php?t=12930 |
#33
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#34
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Of course it is, couldn't you tell?
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#35
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Glad I could bring a smile to your face. BTW, I have a friend who has a Honda... it goes....
Bzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz zzz! |
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