Thread: Tuning Help

YES hp tuners will suck all your boost!

Please re read what he had to say up there. your mods increase flow. you are correct that durration and lift has not changed, but since you can get more air in because of the lowered restriction you will have lower boost.

think of it like this. you have the same set of lungs. start running. now take a straw and try to run just breathing thru it! cant go too fast without passing out can ya? your car without the porting is the straw. get it? you havent changed your lungs or your lung muscles at all. just the pipe feeding air to them. same as your car. more flow mods equals less boost. if you are worried check the before and after values of the MAF sensor in your data logs.

Originally Posted by 05GTPcmpg

dude yeah I know how boost is measured but the stock cam, valves, heads, are all stock. I ported the intake ports and exhaust ports but that shouldnt change the boost pressure, it will just be more free flowing but its still a sealed unit. I was wondering if anyone out here has ever seen boost drop from a tune with hp tuners?