Can custom tune get rid of torque dip on stock headers/exhaust?
Not planing to change any engine/exhaust hardware for a few years and am wandering if software tuning can solve or at least considerably improve torque dip? Tune will be custom, done by the tuner, no ready presets.
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OFT can help but on stock everything without e85 that dip will still be there. It will be mitigated but not gone?
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Not as far as I know
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No, it is a hardware issue.
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This is about what you can expect with a nearly stock car and a tune:
http://imageshack.us/a/img89/2433/8poo.jpg You reduce the duration of the torque dip by 500 rpm (3200-4200 vs. 3200-4700 rpm). Only you can say whether you consider that a considerable improvement or not. |
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Alternatively nearly any catless header + E85 (if you have access to it) will eliminate the torque dip as well. |
Not doing headers is a waste. It makes a huge difference. All I have is headers and a dyno tune by Zach and the car just woke up. HUGE difference
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Agree with others. Get tune and header and leave everything else. I just drove my car stock at my local time attack/go kart track. It's a pretty low speed course and a header a tune was worth just about a second or a bit more. Normal laps for me are low 46s or high 45s. Was in low 47s and high 46s. 100% worth it
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It makes a real difference to the car, as other have said it wakes the car up. Really happy with it. In terms of power and torque there is not much to be had after you get past the front pipe and even the replacing the front pipe won't yield much apart from more noise. |
Anything after headers is more for sound unless you boost the car. Header + tune is pretty much a must have mid for the first gen twins after better tires
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And would changing headers + tune eliminate the torque dip completely? I read controversial opinions, some say it will, some it will not. Also cat vs castles, something I don't really get. If bought with cat, assuming it's an aftermarket product can it malfunction in future? In my country I will pass emission tests without cst just fine.
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Yes, ALL cats can malfunction over time, no cat lasts forever. Cat-less is the better way to go if your emission rules allow it or you can get past it, as there will be a little more power to gain. |
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