Damn! What may be missing? Spark plugs?

Very weird!

Just doing a sanity check..... wideband is not messed up... right? Sorry if it is redundant or too obvious.... but sometimes we overlook minor stuff! It happens!

 

over boost? did u try to lower the boost to see if it will richen it up?

 

That's good they both read the same... But that doesn't answer the question about a possible exhaust stream leak...

Check injector scaling because I had this EXACT same problem with my car and we dumped the absolute lowest AFR you could get in the map and it still did the lean crap. It wasn't until my tuner noticed a fat finger mistake in injector scaling that everything went back to normal...

-E

P.S. Please list ALL mods on this car so we can look it over...

 

we tried lower boost...

we also checked the map thoroughly...

and, there isnt a noticeable exhaust leak... we checked everything.

it has s1s, stock turbo ported ex mani, SS o2 housing, pump, ets fmic, piping, turboback, catless, hks intake, ported intake mani, and tbody

cb

 

tested different maf sensors? ...cleaned the maf

 

corrupted bin in the ECU? Since it is a IX, I would start from a clean Rev 15 and start porting the tables over.

Just a thought!

 

Ignition system? ie. wires, coils, etc?

-E

 

Hey Chad.. Thanks for the inputs.. i appreciate it.. I put back the stock manifold today and it runs even leaner... from 3000 to 5500 is in the 11.9 to 12.2. i will go get new gaskets tomorrow and i will take everything apart one more time..
the good part is that i can do this whole process in less than 2 hours already

 

i am going to look over all things again tomorrow.... Its just that all this happend after i took the stock parts out... that why i think that nothing could be wrong with ignition wires and coils cos i never took them out until after we stared trying to fix things...

 

Want to do mine??

Did you leave that bloody fricken bracket on?? I chucked that thing across the street and left it there...

-E

 

yea.. I do it with the bracket... its fun man.. and its even more fun when u put everything back togather and the car still runs like crap....

 

the only thing we did not test is the maf sensor.... do u think it may cause it to run lean???

 

Yes most definitely... Take of the MAF and spray some MAF cleaner on it... ONLY use cleaner specifically made for MAFs...

Let us know how dirty the towel was...

-E

 

I almost did that this weekend when I took mine off This is odd that the car is still running lean after all the thorough checks, makes me scratch my head too.

 

any updates?