This is why it is such a damn shame that the Project Peformance Spec-V is on (permanent, perhaps) hiatus. They would have a concrete answer for us with dyno runs to support it.
Without that, all we really have is heresay. If you had asked this question about the lightened crank pulley before NPM tested it you probably would have had a consensus answer (based on a mix of he-said, she-said and claims made on product vendors' websites) of 4 to 6 horses. Their article proved that it is more like 1 to 2.
Why did that project get stopped? There arn't to many mods for the car sure but there were still some more like cams, and they didn't even touch suspention. I guess they saw that there just wasn't gonna be a huge aftermarket for the motor. They complain in almost every article that they want a chip to raise the red line. (which dosn't look to plausable)
Likely costs. NPM doesnt own the cars to my understanding as the owners do. If an owner runs out of money, then obviously the project cannot continue. Considering NPM gives hard dyno facts as opposed to many people's opinion, the loss of Perf Spec V is a shame. Hopefully Race Spec V will continue where the last left off.
It won't do anything really. it is just that you want to make the car breathe better and you can with the stock manifold. Cai & Exhaust & cams without header kind of defeats the purpose of putting the cams in.
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-Silver-2002-Sentra Spec V My Sr20Ve Insall Thread
You can run aftermarket cams without any other mods and concievable be able to take a Spec V with I/H/E from a roll. However, with the problems of the pre catalyst and the fact that full bolting and cams will yield more gain, I would suggest adding a header and test pipe before camming
You can run aftermarket cams without any other mods and concievable be able to take a Spec V with I/H/E from a roll.
No way, although the lower end loss wouldn't be felt from the cams because it would be from a roll, if someone had a 4-1 header it's gonna give just as much top end as cams, and then you add intake and exhaust to the mix, and the cams cant keep up. But then again I cant say as much, seeing as how you are fully bolted and know more than me.
I guess they saw that there just wasn't gonna be a huge aftermarket for the motor. They complain in almost every article that they want a chip to raise the red line. (which dosn't look to plausable)
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