Nissan 370Z Forum - View Single Post - Stillen Headers installed

t-ray · 04-27-2009, 10:01 AM

I just looked at the dynos in detail for the first time. I have to say that headers are totally a waste. I know that's gonna piss some people off - sorry about that.

First, I find it odd that the dynojet showed so little change yet sharif's dyno showed such large gains(comparatively). Dynojets might not be the most tuner-friendly brand of dyno, but they are generally exceedingly consistent.

Unfortunately, the only graph you have that is overlayed is the torque graph. Looking at that plot, you don't start making any more power than before until about 6750 rpms. That means that in the real world, you won't see any difference unless you spin the piss out of the car. Realistically speaking, you'll see a very small(10whp) difference, and that will be for less than 1000rpms. That kind of gain won't be perceptible until you reach something like 4th gear, where you're actually gonna be in that range for more than a split second.

04-27-2009, 10:01 AM	#72 (permalink)
t-ray Base Member Join Date: Apr 2009 Location: bham al Posts: 91 Drives: 05 g sedan 6mt Rep Power: 16	I just looked at the dynos in detail for the first time. I have to say that headers are totally a waste. I know that's gonna piss some people off - sorry about that. First, I find it odd that the dynojet showed so little change yet sharif's dyno showed such large gains(comparatively). Dynojets might not be the most tuner-friendly brand of dyno, but they are generally exceedingly consistent. Unfortunately, the only graph you have that is overlayed is the torque graph. Looking at that plot, you don't start making any more power than before until about 6750 rpms. That means that in the real world, you won't see any difference unless you spin the piss out of the car. Realistically speaking, you'll see a very small(10whp) difference, and that will be for less than 1000rpms. That kind of gain won't be perceptible until you reach something like 4th gear, where you're actually gonna be in that range for more than a split second.