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Engine Management, Fuel, Spark, EGTs, and Air/Fuel Ratios This forum includes modification, tuning, repair, replacement, identification and restoration of all components mentioned above including SMEC, SBEC, Logic Modules, aftermarket engine management, etc. Nitrous oxide posts go in here. This is the place

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Old 10-13-2007, 09:48 AM   #1
90 T1, running rich and weird boost problem...  
Naturally Aspirated
 
Join Date: Apr 2007
Location: Brainerd, MN

My Ride: '90 Daytona
Engine: 2.5
Induct: Turbo
1/4: 0.000

Posts: 85
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I've got a 90 Daytona with the T1. It runs quite rich, you can smell it on WOT. I'm trying to narrow down the possibilities here. Here's what I've done to it:

2.5 open exhaust
vacuum block
grainger

not too much yet.

Someone said the ca sprocket can be off one tooth and still run but not at the best. I would be able to tell if it's outta time wouldn't I? I've done a few timing belts and you could tell right away if it wasn't all timed.

And my weird boost problem. Sometimes it'll boost fine, then it'll boost creep up to 15 then it'll spike and back down. I don't get it. Anyone have suggestions?

-Mattie
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Old 10-14-2007, 01:03 PM   #2
Re: 90 T1, running rich and weird boost problem...  
Naturally Aspirated
 
Join Date: Apr 2007
Location: Brainerd, MN

My Ride: '90 Daytona
Engine: 2.5
Induct: Turbo
1/4: 0.000

Posts: 85
Feedback: (0)
Well I took off the grainger and wanted to run stock boost until i figure out what's going on and I can't boost to 5psi! So I'm concluding I have a boost leak somewhere which should answer the questions above huh

-Mattie
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