Computer Diagnostics and Tuning Technical discussion on diagnostics and programming of the F-body computers

offsets for seimans injectors? idle problems also, after injectors.

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Old Aug 26, 2002 | 10:53 AM
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6Speed's Avatar
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From: Tuscaloosa
Post offsets for seimans injectors? idle problems also, after injectors.

Haven't had any luck finding this out. Thought I'd try here. anyone know?

I just installed some 36# seimans injectors. I changed the injector constant to 36 in lt1-edit, as a starting point, and ran that for a little while. The car had zero surge with stock injectors, and now it's surging a good bit down low. I'm running a 306 cam, and ported stock heads, with the usual bolt ons. I set the constant to 37 just to toy around, and it seemed to help a little with the surging.

I'm thinking about changing the offsets but wasn't sure what to change them to.

I found the link (http://carprogrammer.com/Z28/PCM/Injector/injectors.htm) to the offsets for SVO's, but didn't think that'd be the correct numbers to plug in. Anyone know the offsets for the seiman's 36?

Also, when I come to a stop at a redlight or whatever, my car idles down to about 500rpms for about 5-10 seconds before it idles back up to 1000. It didn't start doing this till after the new injectors. I've tried editing both IAC tables with no luck. What next?

Thanks!
Zack
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