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gtconv91
01-11-2009, 06:34 PM
Just got a 2003 S281 SC, 6100 on the clock... Bone stock, Beautiful car... but what is up with the boost???
At 3000 rpms im getting like 4-5 psi
and at 5500 rpms it finally gets to 8psi??

is this correct?? i thought these were suppose to be twin screw supercharger and it seems more like a centrifugal then a positive displacement blower?

would a 66mm pulley fix this...??

Dave
01-11-2009, 09:08 PM
I could be mistaken, but off hand I want to say people have reported the various boost gauges used between 1999-2004 are not the most accurate. Or they are only accurate under full load.

Not saying you might not have an issue, just saying the gauge can't be relied upon.

Yes, 2003-04 has the Saleen Series IV.

gtconv91
01-11-2009, 09:30 PM
Dang i was almost hoping that it was the blower or something like that... these cars are SLOW!!! Expected them to at least run with a 03-04 Cobra....

HOLLYWDHOMICIDE
01-12-2009, 12:29 AM
Call Joe at Chicane Sport Tuning. He can help you get a little more SAFE power out of her. I know what you mean!! I bought 03-0274 Brand New (Supercharged). She has about 390 miles on her. No fun.....TOO SLOW...she sits in storage....Expensive lesson!!
Chicanes number: 1-310-782-0063; e-mail: chicanetech@gmail.com