hi, all, i am a skyline fan, love skyline so much, so just bought my second skyline last month, its 99 R34 GTT. the car came with a 3 inch exhaust, (should be all the way from turbo), a hks filter and teinz coilover suspension. then i had a boost gauge intalled by soome one. Last week IS Motor Racing at Rockdale supplies and installed a G-readdy electronnic boost controller for me, did a tuning on the same day.(139.5 max power at wheel). The guy told me my car is pretty much in stock condition, and all the stock R34s are between 130kw - 150 kw, only brand new can do 206 kw, for a 10 yrs r34, any where between 130 - 150 kw is normal. then During the tuning, he tested 0.6 bar first, was ok. then he tried 0.8 bar twice, failed twice, the power or boost was like goes up then drop down. what he explained to me was the stock computer will cut the fuel off if over boosted and strongly suggested me to buy a power fc. At the end of day. the guy setted 0.6 as low boost, and 0.7 or 0.65 as high boost...
we all know 1 bar =14psi, so 0.6 = 8.4 and 0.8 = 11.2
my questions are
1. is 139.5kw sounds normal with above mods?? i searched Autospeed website, says there stock R34 can do around 140-150kw, then plus exhuast and filter can do 160-170, and 180-200 with power fc on top of all these. 139.5kw is just fxxk sad ans much less, though i heard every dyno machine is different, differnt dyno machine can give you different KW.
2. anything wrong with the tuning?? stock computer should allow u to boost to a safe level without fuel cut, i searched formum, most of you can boost to 11 or 12 psi with same mods as i have.
3. i could boosted to max 9 or 9.5 psi with high boost setting on the booster controller, and a low boost of 7psi before today. but today, no matter how hard i tried, i could only reached to just bit less than 7 psi with high boost, same as low boost. and i could feel the power or boost stopped, kind of fuel cut or boost dropped, even the speed stays. tried gear 2, gear 3, gear 4, and gear 5. all with highest boost of bit less than 7 psi, could reached to 9 0r 9.5 in the last few days.
dont know what happened to my car, really sad now, please help, thx for reading this, ai~~~~~~~ paid $18000 for a piece of shit.