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overrun rumble on decel (Read 2524 times)

Quattroporte YaBB Newbies Offline I love MyECU! Posts: 39	overrun rumble on decel 07/06/10 at 13:05:02 I put a tiny bit of inj duration on the 0 throttle line to create a bit of overrun rumble like my overcarbed Lemans did. I actually like it as it's not too loud. will this cause long term issues with my engine? InjDur 00 4496 2800 2800 1520 1504 1440 1296 1296 960 912 992 848 912 912 752 608
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Re: overrun rumble on decel
Reply #1 - 07/06/10 at 17:43:59

Quattroporte wrote on 07/06/10 at 13:05:02:

I put a tiny bit of inj duration on the 0 throttle line to create a bit of overrun rumble like my overcarbed Lemans did. I actually like it as it's not too loud. will this cause long term issues with my engine?

InjDur 00 4496 2800 2800 1520 1504 1440 1296 1296 960 912 992 848 912 912 752 608

I think what happens is the mixture doesn't ignite until it reaches the hot downpipe. Shouldn't cause any issues as far as I know. I got similar effect from zeroing out all of line 0 (above 2000 rpm or so) - I suppose it actually happened between row 0 and 1 due to interpolation. Somewhat cool but I grew tired of it quickly.

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