Cfi engine mod questions
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Instructor
Joined: Mar 2016
Posts: 204
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Cfi engine mod questions
I have a 82 cfi all stock i want to beef it up i was thinking of putting a 465/488 cam or choppy type and was goin to see if i can put bigger heads will i have to do anything to the fuel injectors or ecm i have the 85 pump in the tank
Zen Vet Master Level VII
Joined: Mar 2016
Posts: 5,214
Likes: 1,173
From: Southlake, TX
The first thing to address with our XFire engines is that the intake is super restrictive and actually chokes out the engine some.
Before you put money into heads and cam, consider getting a Renegede manifold. The folks that have put that intake mod on their car-- with nothing else-- swear they get another 30 HP out of the rear.
Hit up BUCCANEER on CF as he is the guy who had built up a gazillion XFire and knows what to do (and more importantly) what not to do.
Before you put money into heads and cam, consider getting a Renegede manifold. The folks that have put that intake mod on their car-- with nothing else-- swear they get another 30 HP out of the rear.
Hit up BUCCANEER on CF as he is the guy who had built up a gazillion XFire and knows what to do (and more importantly) what not to do.
Le Mans Master
Joined: Oct 2010
Posts: 6,922
Likes: 839
From: melbourne florida
2023 C3 of the Year Finalist - Modified
The factory CFI intake is garbage for performance. the ports are about half the size of a regular small block intake. I guess the renegade intake is better but I suspect that you would need bigger throttlebodies to go with it then you have to figure out how to tune it.I'd explore some good aftermarket systems before I went down that road. the first time I saw a CFI system when they were new I thought it was a goofy system and nothing has changed my mind. some people think they look cool, but people think lots of goofy stuff is cool. good luck but I'd pass.
Le Mans Master
Joined: Jul 2000
Posts: 6,663
Likes: 162
From: columbia city in
The factory heads are not very good .get something aftermarket.be careful on the cam.i would get one that is recommended from crane.you want the injectors and the ecm to play nice. If you want bigger you will have to change the ecm.The intake can be matched to the heads but the best is to the renegade.i would think about how much HP you really want and how much time and money you have and is factory looking important to you.$$$$$$$$
