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Go Back   Rx7 Forum and Owners Club > Specific RX-7 Models > 3rd Generation

3rd Generation 1993-Current Discussion


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Old 12-28-2004, 02:21 PM   #1
wildbilly7
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Join Date: Dec 2004
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Default 3rd gen exhaust / porting question
Hello,

I just installed a heavily ported 13B into my otherwise stock 3rd gen, and was wondering if I would still have to put in a new ECU if I add an exhaust / intake. I know it is deadly to run a 13b lean, so I don't want to risk adding more air into the engine if not enough fuel is going in. I figured the porting would bring in more fuel anyway (to balance more airflow from exhaust / intake), so perhaps a new ECU would not be needed.

Also, I live in mass., so any upgrades I do have to pass emissions

(its already passed with the ported motor)

Any help is greatly appreciated.



-Billy


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1994 RX-7 - extended port
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Old 01-04-2005, 06:58 AM   #2
AusTexRex
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Join Date: Apr 2004
Location: Austin & Waco Texas
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No, porting only brings in more air. You'd need an s-afc or some kind of fuel modifications to support that engine if you're going to run more boost on it.
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