Have a customers car here for XFI and figured I'd pull some data since we hardly see any on such close to stock applications. Engine is a stock short block with stock heads stock rocker arms and a TA 49 Garrett .63. Alky/93 fuel. Converter is stock. Has a Dutt neck stock Intercooler. Exhaust was just switched before any data gathered from stock dp to TH 3" dp. Open exhaust from the dp. XFI for engine management. The car has previously run 12.33@108.68 with a 1.85 60' on stock ecu through the Pypes exhaust with race pros, and stock dp at LVD. Not sure about air quality. We're seeing high 20's low 30's boost and 45-50psi exhaust pressure here after removing the air flow restrictions of the stock MAF and dp. Seems to start to drop cylinder fill in the high 4000's. Not using a lot of fuel. Very indicative of stock heads and high drive pressures. Still looks like it's using enough to run 11.1x. With no changes to the wastegate we just picked up 5psi boost after speed density install. Haven't touched the timing or the targets (has targets and timing strategy of a low 10/high 9 alky engine) and haven't locked the converter yet either.
70-110mph (vss data) a little under 6 sec.
I'd expect huge gains with an Intercooler here. Pressure drop is likely high and cooling is limited with the stocker
I'd expect huge gains with an Intercooler here. Pressure drop is likely high and cooling is limited with the stocker
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