[TTP Engineering]

Matt_T67 jumping the gun over here !

Anyhow, Matt brought in the black beauty yesterday to bring his latest set of mods to life. Last time he was out, we has tuned him on his stock cams, pump gas to 355whp I believe which allowed him at full weight to achieve 11's in the quarter mile.

This time around, the changes consisted of 750cc injectors, RNR ramhorn GT35R on .63 hotside and stock cams still. Matt got a deal on some Kelford 280 camshafts, but we advised against using them on the street car as the lift and duration were excessive for both the valvetrain and his setup. We did advise him that a 272 duration camshaft would be better suited to his current setup.



So we got to work on the car after popping in some ARP headstuds and getting it on the dyno. Even at a lower boost level the car was detonating on the tune it came in with from another shop. Matt had the car tuned up north for the drive down. However they seemed to get the injectors sized correctly, they failed horribly in the rest of the mapping.

Remapping the mivec advance tables, ignition timing and fueling, unscrewing the rpm scaling and adding our antilag 2-step mapping, the car came alive. When it originally came in "tuned", as a baseline it only made 10whp more than his stock turbo when it was last tuned on site. After we reworked the mapping and optimized the boost, afr and ignition timing, the car came alive at 428whp on 93 alone.

Here is the dynosheet:



Out of curiosity, I also found his last pump 93 tune from the last time he was tuned here and overlayed it with the new 35R dynosheet for comparison.

Here are those results: