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Old 11-05-2013, 09:54 PM   #1106 (permalink)
synolimit
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Join Date: May 2013
Location: Columbus, OH
Posts: 5,051
Drives: 2013 Silver 370z
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Quote:
Originally Posted by andre12031948 View Post

Your second problem is that with headers(not needed) & test pipes, exhaust plus no tune = your car running very lean. Not only performance suffer but it is not good for the well being of the engine.

When you make so many changes, a tune is a MUST!!! You need the timing, fuel, everything adjusted/matched up to the NEW/DIFFERENT working PARTS.

Also these mods are for high rpm H.P. So that's another reason for gears.
Not only it takes you a long time to get to top/high H.P. but after every shift the rpm drops so much that again you are far from your high H.P. It's almost a miracle that you did this well.

Just get smaller/lighter wheels for the rear, plus a set of M/T or Nitto street/drag radials. You can drive with those to the track, then drive back home.
Umm I have cai, LTH, basically a straight pipe CBE and still running rich as when I was almost stock. There's no way he's running lean if I'm running rich. My motors well being is extremely safe at about 23-24 degrees of timing and 11.9-12.4 AFR. This was all logged and dyno'd.

I also don't 100% agree with lighter wheels/tires/flywheel/pullies etc on a drag car. When shifting the rpms will actually drop faster than if the car had heavier components that keep the inertia up and spinning. The OEM wheels are light enough.
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Last edited by synolimit; 11-05-2013 at 09:57 PM.
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