M37S GTM SC Stage 2 - falling engine speed

grabba · 02-15-2014, 02:42 PM

Quote:

Originally Posted by George@GTM

This issue only occurred once you changed exhaust, was anything else changed around the same time?

No, nothing else was changed. Maybe weather?

Quote:

Originally Posted by George@GTM

Have you tried putting the OEM exhaust back on just to rule out if the exhaust is somehow related.

No, it could be rather difficult because I don't have catalytic converters now.

Quote:

Originally Posted by George@GTM

I can't see how an exhaust would create this issue, especially at such a low load site.

It is strange to me too. I did reflash ECU with GTM ROM and went for a short ride.

There is log from this ride: https://drive.google.com/file/d/0B-5...it?usp=sharing

At the beginning the issue occurs 2 times, later engine speed falls too but not to 500 rpm because speed is higher. From 1:18 to 1:40 this issue occurs several times at speed about 15 km/h.

Thanks, Robert

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