I have an 87 gt 2.8 stock. I was thinking lf porting the throttle body maybe. What are some diy things or addons i could try. Thanks

Porting the intake will give you some decent gains.

Would you or someone please guide me on how to do this and what will i need? Thanks. I cant find it anywhere

Porting the exhaust manifolds will do more.

Here's one for the lower intake/heads:

https://www.fiero.nl/forum/A...040223-2-039423.html

There are lots out there on porting the exhaust as well. Do a search under 'port exhaust' and make sure to chose 'entire forum plus archives'. Lots of good info out there. If you have the time, I would recommend you do both. I've read that most that have done it have been pleased with the results.

You could buy a performance chip, it will give you some more power

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Any man can drive a car, but it takes a real man to drive a Fiero.

[This message has been edited by Fiero_Fastback_Freak (edited 09-07-2013).]

Get a dyno and see how much power you're making and what your a/f ratio is across the rpm range. If it's below or above 13:1 the a chip could help if tuned to your specific needs. Don't buy a chip off the shelf.

Don't buy the performance chip. Its a waste.
port the exhaust manifolds, y-pipe, and buy a new muffler. 14 horse dyno proven.
I cant look up the threads right now though.

Like he said, ported exhaust manifold, ported Y and if you don't need it, get rid of the CAT. It is likely clogged.

You may need a muffler, but you may not.

The real issue after that is done, is the intake and flow.

I built a 2.8 to 132 hp at the wheels. It took porting the heads and all of the above. I also carb'd it to get more fuel mixture into it.

In short, though, the ported exhaust is the quickest and most efficient improvement.

Arn

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I just did the manifolds, port matched the intake to the gaskets and the 1.6 roller rockers and it runs so great. It is like a new car for real. I didn't get to do the pipe or y pipe and still had awesome gains.