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Problem with tune for Z32 maf & 444cc inj, engine stumbl

 
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zef



Joined: 17 Mar 2008
Posts: 7
PostPosted: Mon May 12, 2008 9:22 am    Post subject: Problem with tune for Z32 maf & 444cc inj, engine stumbl Reply with quote
I have a CA18DET engine with 444cc injectors and a copy of a Z32 maf (n62). I do think that the copy isn't perfect, Have used JDM maps and adjusted for injectors and maf, k-value were pretty low when cruise and boost AFR were ok.

My problem is that the engine stumbles and almost stalls when cruising at ~3500-4000 rpm and giving full trottle. If going full trottle from 2000 rpm there is no problem in the 3500-4000 rpm region.

Any ideas what could be causing this?
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