motor swap, now running real rich

[williillii]

Just put a 4g64 in my car. With a 7 bolt head using a 1g CAS. Before the swap it was running pretty good. A bit lean at WOT but thats not what this is about.

The only CEL is for the evap system. And I do not have a working logger at the moment...95 ecus are shit for logging . Switching to evo ecu next week.

When I start the car up it will start out around 13:1 on the wideband. Then it will creep up to 14.7-14.9:1. It will stay there in cruising for about 3-5 minutes then it will dip back to 13:1. Traveling around 45mph it will hang out around 12.9-13.2. If Im on the highway doing 80-90 it will dip to around 12:1, and I even saw it as low as 11.8 once.

I am fairly sure the wideband is reading right. I can hear the engine note change and feel the difference when it is rich. Plus I can smell it.

I have a small boost leak out of the TB shaft seals. But that would only richen it up under boost. I dont know how the car runs over 5psi now because of a new clutch, and Im scared to take this hi-comp motor over half throttle without being sure its running right.

Anyone know what could be causing this? Thanks!

 

[LunarEclips]

some info on which turbo and fuel mods would help. Also what kind of fuel management??

 

[williillii]

some info on which turbo and fuel mods would help. Also what kind of fuel management??

Sorry. Stock fuel system other than an evo IX pump and rewire. No management atm. Buying an evo ecu when I get paid but Id like to have it running right before hand ya know?

14b btw but I dont see how that matters.

I just realized that my injectors arent shutting off when I let off the gas. I yanked up on the pedal and they shut off on decel for a few times, then it went back to doing it again. Also I noticed when I go up a steep hill it will lean it out to 13.2-13.3:1 so Im leaning towards the TPS being misadjusted. Gonna check it out when I get off work.