Questions diagnosing what I have.

[boostforfun]

I recently purchased another dsm, a 90 AWD 5 speed car, that supposedly was tuned with link and had 550cc injectors.

After some initial issues with the honesty of the guy selling it, I am suspecting he might be a lying sack of crap. Still, I want to find out what I have. I purchased a wideband for the car because I don't want to turn up boost or do ANYTHING without knowing exactly where AFR's are.

Anyways, I pulled the ECU, and could not get it apart because I stripped a screw out, but it has a reman tag on it, and I doubt it has ever been opened. So, it is doubtful link was ever installed.

Further, the AFR runs between 13.8 and 15.0 out of boost just cruising down the road (maybe as lean as 15.5-9 under very light throttle), and pops to low 12.x as soon as boost starts to climb. This leads me to think they are stock injectors, because a bigger injector with no correction should run fat under theses conditions, if anything mine is a little too lean.

However, as soon as boost reaches 8-10psi and starts coming on hard, the AFR drops into the 11s, and then pegs the gauge under 10 at 11-14psi where I have it limited. 10.0 is the lowest the AEM goes, i think. So that makes me think that there might be bigger injectors because you think that stock 450s on an E16G (unless he lied about that too, but it does look new) would run a little lean at 14psi, not peg the gauge at rich.

I looked at the injectors and they are blue top, but look lighter blue than some of the stockers I have seen from 1g dsms.

I guess I can pull one and take a pic. Also could take a pic of the turbo if anyone knows how to tell if it is an E16g or not.

If this is not in the proper forum, please move.

Thanks!
Brian

 

[blackhawkgsx]

this is a 16g look how the blades are doubled

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this is a 14b

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[boostforfun]

Ok, well its a 16g for sure. Now if I could only figure out the injector thing.

 

[BLINKY619]

what color are the injectors and can you take a picture of your motor so we can see what you have and understand more..!!

 

[slow4g6392tsi]

Could be as simple as a boost leak. Also umb, I would still open the ecu to see what's up. And for injectors, pics or description would be very helpful.

 

[Fast-Orange]

If thats your turbo its a big 16g not a Evo3 16g you can tell by the serial # 49178-01420 and a evo 3 is 49178-01470
My bad thought tha same person posted the first two posts anyways just look and the serial number on yours and compare