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Arkayn posted a topic in General Automotive ChatHey all. Looking for opinions on those who would know what is wrong - if you look at the dyno, it is just not good. Mostly validate if I need bigger size cams, etc. S15 Jap Spec-r. Running GTX2867r with 86 rear housing. (brand new Gen2) Stock cams. 850cc Injectors (JECs side feeds, flow tested), splitfire coils (blue ones). Blirtz Spec-r boost controller. Custom hard intake pipe (3inch?) 455L Walbro Fuel Pump. Z32. BKE7 something spark plugs (new and the correct ones). Kakimoto Regu 06&R with resonator removed. High flow cat, tomei 3" dump. FMIC (generic). As the dyno results show - no power. People like to blame the housing, others the tuner. The tuner is good, those who he is all agree. The figure is way down regardless of the housing size. I don't believe the housing is the issue either. Just a LITTLE more lag. The timing was not advanced further due to detonation. FYI comp test is fine (135 to 145 across all 4 from mem). Leak test done - no boost leaks. The car had the T28 before and would move even at 6th gear at 100km/h, my old S15 had a 2871r 0.64 and moved still without a tune more at under 5kRPM. Again, No boost leaks, injectors have been tested. With no cat and exhaust it made 192kw. So that eliminates the exhaust. I want my bottom end back and my 260kw I should have. Tuner is saying E85 and cams are needed as some SR20s just don't make power. I am hoping not to rely on E85 to make her move again. With all the above info, WHAT THE HECK IS WRONG?!?!? Thanks all.