BIG BIG disappointment
05-25-2009, 12:14 AM
#21
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Originally Posted by CarbonYellowJ's,May 24 2009, 11:24 PM
wow with a Dynojet that is very low. Idk why you made such a small gain with the AEM. I also have a 60rs and know that it doesnt make the best power but it is a great streetable exhaust. Idk if you got it tuned in Pullman but I would recommend getting a shop like Rrev or Forged in Portland to do the tune. Rrev did a great job with my S2000. The tune is more important than the tuning device
05-25-2009, 04:49 AM
#24
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I'd definitely check the compression. By chance was the car turbo before you bought it?
That number is way low for a DynoJet.
And your tuners statement about why he set the rev limit to 8400 kinda solidifies to me that he's not the best tuner out there. The F20 doesn't make power past 8300rpm...but if you shift an AP1 at 8300 you will be slower than an AP1 shifted at 9k. It is the area under the curve that's important...not where it stops making power.
That number is way low for a DynoJet.
And your tuners statement about why he set the rev limit to 8400 kinda solidifies to me that he's not the best tuner out there. The F20 doesn't make power past 8300rpm...but if you shift an AP1 at 8300 you will be slower than an AP1 shifted at 9k. It is the area under the curve that's important...not where it stops making power.
05-25-2009, 08:11 AM
#25
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Originally Posted by the s2k dude,May 24 2009, 09:06 PM
most NA mods werent designed for top end power. they were made to increase midrange and low end torque.. something that our car needs. stock.. the s2k is pretty perfect. there is not a lot an aftermarket part is going to do for our car. thats the reality of it.
I knew this going into iit and dont expect to have gained a lot of HP from my mods... but i love em just the same!
I knew this going into iit and dont expect to have gained a lot of HP from my mods... but i love em just the same!
OP, post a graph so we can see how much midrange you gained... I would assume you have a much better midrange just from the huge gain in torque....
05-25-2009, 09:13 AM
#27
Originally Posted by tsoshi2007,May 25 2009, 01:14 AM
i got it done at C-speed Racing in Bellingham by Cres. He tuned Ben's AJR time attack S2000 so i think he is probably the best guy i'm looking for. Based on what he said, my engine power is just weaker than usual for some reason. But i never dyno my car when it was stock so i can't prove if it is right. so painful to hear this tho
05-25-2009, 09:24 AM
#28
Originally Posted by negcamber,May 24 2009, 09:46 PM
What is the diameter on the J's test pipe? If it is larger than 60mm, then you are causing a constriction by forcing the gasses into the J's 60RS, and that may be leading to a harmonic resonance that impedes flow even more.
05-25-2009, 09:29 AM
#29
Originally Posted by LostMotion,May 25 2009, 12:13 PM
Try the stock header.
Also, you should have dyno's the car stock to get a true baseline, then added the bolt-ons w/ dyno, and then tune.
This way you can see the improvements across the board.
05-25-2009, 09:29 AM
#30
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Originally Posted by Mor.gan,May 25 2009, 09:24 AM
Wouldn't that be a Venturi Effect thus increasing the flow?