ls1 64 vette rich on decel

[BobR]

ls1 rich on decel

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:I have a stock ls1 with 67mm turbo .it is being tuned through the mass air meter the part throttle and cruise is perfect,but decel at low speed goes rich from 14.5 to 11.0.it never did it until i changed injectors to motron #60lb.cant seem to find right table to make correction tried small pulse. the engine is in a retro 64 vette.any ideas:welcome:

[joecar]

BobR,

Do you have any log files...

It sounds to me it's related to B4001, have you recalculated this for your injectors...?

Or the other injector tables (Motron has different physical behaviour than stock)...

The PCM has trouble opening large injectors less than ~1.5ms...

Some people have found that setting B4005 to negative values may help.

Search this forum for B4005, there's a few threads relating to B4005.

Cheers
Joe
:^)