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2G Pegged lean At 10 psi

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DsmDanielson

Proven Member
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Jul 13, 2016
Peoria, Arizona
I read probably 100 threads and still nothing so here it goes. It's always something isn't it? So 2g, 6 bolt swap, wally 255, afpr, safc, big 16g, evo 560s, and 20 psi boost. I was driving and I saw a Honda guy, so I just had to do a little pull past him ( you know the inclination ) and when I hit 20 psi, all was good. Get to the light, but it in third and tried to boost again, but it bogged at 10 psi. My wideband read really lean when this happened. All above listed upgrades are at max 3 months old, as are my plugs and wires. I have Taylor 10.4mm thundercores and ngk iridium gapped at .28. Everything was fine until I had to be a show off. Fuel pressure was good, my wires are good, got some oil on them from the spark tube seal not seating right but it's not bad, and I've always had that issue. Not a boost leak if it's pegging lean so let's not go there... My injectors do clack pretty loud but I just cleaned them. Any thoughts?
 
Slight chance but maybe a connector got unplugged? Check TPS if it's seating properly, check boost controller vacuum lines, look around injectors for leaky seals. If not maybe a logger can tell you more if you have one.
 
First off get rid of your iridiums and put in some good old BPR7es copper plugs. I have had nothing but problems with iridiums and pretty much every wiseman will tell you to run copper plugs.

Does the car sound any different?
 
I would check All connectors in fuel system, could be a sticky. I would also check connections at af gauge and o2 sensor. As stated above a data logger could help pinpoint this as well
 
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