Originally Posted by jags911tt

nerdhotrod will you fly out and do tunning if we have a dyno to use?

Originally Posted by Highhats

I first learned about the lean up top due to the horrible off the shelf programming by putting my car on the dyno. This is why an AFR gauge is a must. I needed to put a colder plug(makes car runs richer) as well as the 5 bar when I put the boost controller in. The whole idea is to stay in safe AFRs. My secret which I will pass on to you guys now is that I put a kenne bell boost a pump in my car which has a **** to overdrive the voltage of the stock fuel pump. This was my ticket to run boost over 1.7 bar on the gt28 hybrids. My car stayed at a steady 12.1 afr with these plugs. 1.7 bar and the boost a pump. I also put down a load of power. PS these mods were done post my 686rhp graph. So I assume I was making around 700rwhp with the set up maxed. You have plenty of injector. The problem at this point ends up being the pump. GL



Suman

PS these gt700 kits are exactly that 700hp. GIAC programming doesn't really give you the gt750 power that it claims(with TB upgrade or with out). I guarantee with out any of these mods you guys wont even gain 15rwhp between the pump and race files at peak. Maybe gain about 20rwhp in the mid range but thats it. You have to up the boost and richen the mixture to make any real power.


Gentlemen! 5 bar and colder plugs in a must! AFR gauge or a dyno with AFR access is also a must when fine tuning the boost control. Also set the boost controller to come on with full load. You should have a spool adjustment on your controller. This will reduce lag tremendously and your car will be a nightmare on the road!

S