DYNO - NISMO CBE and K&N Dropins

_ace_

Do you know how much did the AFR and oil temp changed between runs?

I read a thread a while back showing that oil temp in this car can vary the results by a few WHP. I usually hear the drop-ins give ~5-ish WHP--great for how cheap they are!--so I would wonder if you got an extra kick from AFR and/or oil temp at the same time.

Speedy

That's some nice gains on a budget!

What surprised me is that on the graph it shows the car got richer with the K&Ns vs. without. I'd have expected the opposite, but maybe the MAF system adjusted for them and added a bit of fuel.

Sh0velMan

That's just the WB stuck in the tailpipe, so not really accurate.

I will try and get the data logs from Dan @ OPS and post them.

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Speedy

But it was stuck in the exhaust for both runs correct? Still relative I'm thinking as it'll read a few ticks leaner at the tail pipe vs. pre cat.

Urbanracer

Or maybe the car haden't adjusted entirely and was trying to compensate for the new filters since it sounds like he switched them on the dyno??

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BigT

I just put K&N's and MAF tubes on my car. While it feels peppier with increased throttle responce and more power, I wasn't expecting 16whp or anywhere near that. Hell, I would be truelly happy with 10whp peak.

Cmike2780

It's $100. I'd be happy with 5whp gain. Goes to show, once again, how the stock intake box is plenty efficient. I'd be curious to see what gains the OP would get on this particular car and dyno if he installed the Stillen Gen 3's.

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Sh0velMan

I am not saying my gains are typical, but they are real.

We're probably going to go with an AEM intake rather than the Stillen. Reason being we can ditch the ETI module when we put the uprev tune on it and have a larger intake tube overall.

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Sh0velMan

I would also say it's more like 13whp, since the 293whp on the baseline was at 7100ish rpm and the 309 we got was at 7300.

I apologize for the inconsistent baseline vs modded charts, we were rushed.

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BigT

Well, that changes everything... maybe.

Peak power is that, peak power. It might have peaked at 7100 before and now peaks at 7300 with the filters. BUT, if power was still climbing on the 293whp pull and the run was stopped at 7100 prematurely, then the gains are slightly false and more than likely less than what we are all going with at this point.

Speedy

One easy way to test to see just how restrictive (or non-restrictive) the stock air filters/boxes are would be to just make a dyno run with them on, then take them off. Can't get any more open than that. With the hood up on a dyno and fans blowing on the motor it's gonna get cool air making the CAI test kinda moot as they would be somewhere a bit less than just no boxes at all.

One_Quick_Z

Nice gains!


I made 22whp over my baseline with just exhaust and test pipes, glad you like the results!




DAN

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