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Originally Posted by Storm88000
What about the Nismo FPR and say, the AEM CAI?
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The AEM does not really affect the A/F ratio that much, PR does some but Hotshot has the biggest effect. I think the tuned length of the HS has a sweetspot around 6500-7000 rpm, you can see this in the A/F ratio and the MAF voltage.
The PR and the HS are not copies of each other, I'll say this yet again. The PR has the MAF further from the throttle body and goes straight down where it goes trhough the inner fender. The Hotshot tilts foward here. The Hotshot seems to move the most air at high rpm and makes the highest voltate on the MAF and with the tweaked fule pressure proably makes the most power by far of the three.
The AEM is the longest and has the smallest tubing, the PR is next longest and the Hotshot is slightly shorter.
So I would say don't bother with adjusting fuel pressure on an AEM, the PR will benifit some and the Hotshot bones out with more pressure, about 4 more psi.
Mike
