Ok, I found that my P/N switch had a bad wire, hanging by one strand. Reset min air early this morning, and it seems better.mJust a little bit of surge, but that might get better after the ecm re learns idle. Also....I fixed my PC laptop! Woohoo!
Ok, I found that my P/N switch had a bad wire, hanging by one strand. Reset min air early this morning, and it seems better.mJust a little bit of surge, but that might get better after the ecm re learns idle. Also....I fixed my PC laptop! Woohoo!
Ok, so here is the first Log on this TBI system. The blm seems low at idle...Could this be part of my problem. This log is a como of in town and freeway driving.
Your log is fairly consistent, all rich.
Where are you? What's the elevation?
1990 Chevy Suburban 5.7L Auto ECM 1227747 $42!
1998 Chevy Silverado 5.7L Vortec 0411 Swap to RoadRunner!
-= =-
California Central valley, about 120' elevation. I do have an adjustable regulator, should i try these 305 injectors I have in my tool box, maybe at 18 psi. Was looking at my injector spray pattern last night, doesnt look like a fine mist, but its not droplets either. These 305 injectors may be in good shape.
I wouldn't be putting the 305 injectors in a 350. just my opinion though. Id change the flow rate in the bin to lean it out a tad.
87 4Runner, 15" spring lift, 3" body, chevy vortec 355, 5.29 gears, 38.5x15.5x15" Boggers, 280hr, 16168625 running $0D
93 S10, 36x12.5x15 TSL's, custom turbo headers, 266HR cam, p&p vortec heads, $0D Marine MPFI with 8psi boost.
05 Silverado, 2' lift, 4" exhaust, Bully Dog programmer,
cant tune yet....dont have the chip adaptor for the 7747, nor the balls to make the mod to a flash chip. someday. Since I am running a stock bin, it would be great to get it all into spec just on the factory tune, and get the emissions cert done. Once that is done, i may do the mods, and use Mark's Highway cruise bin, as long as it wont melt my Cat.Originally Posted by PJG1173
Oh yeah, scored a 3M efi cleaner kit at Autozone today, Followed all the steps, will see if it gets better. If not, I will sendnthe injectors someplace to have them done.
Last edited by jameslleary; 05-04-2012 at 09:12 PM.
your other alternative would be to lower the fuel pressure .5 - 1 psi at a time until it leans out enough. when my setup was stock I switched to an AFPR I adjusted for 13 psi and I was globally rich on a stock tune. I had to back down to 11.5 psi to get blms to fall back in line.
87 4Runner, 15" spring lift, 3" body, chevy vortec 355, 5.29 gears, 38.5x15.5x15" Boggers, 280hr, 16168625 running $0D
93 S10, 36x12.5x15 TSL's, custom turbo headers, 266HR cam, p&p vortec heads, $0D Marine MPFI with 8psi boost.
05 Silverado, 2' lift, 4" exhaust, Bully Dog programmer,
Your way to close now to start another complete project.
1990 Chevy Suburban 5.7L Auto ECM 1227747 $42!
1998 Chevy Silverado 5.7L Vortec 0411 Swap to RoadRunner!
-= =-
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