Hello, I'm in the process of buying an 85' 2.5 Fiero, just looking for small little upgrades to get a few more ponies, not looking for a neck breaker but just a little more power would be nice. I know it has tbi and I've never been too big of a fan of it, would a carburetor do be any better? Thanks in advance.

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Ronnie

change to a carb is a lot of work for little gain
the 87 88 fiero duke are peppy !!
the parts to improve performace are difficult to find cheap
best to just improve the ignition & get it running as good as possible
the fiero store has a few performance parts
about twice a year a header or performance manifold comes available
I would so a top quality tune up ,add a MDS coil
later add a thrush turbo muffler ,the Dyno max turbo is better but more expensive
& you need other modifications to take advantage of the Dyno max,& the thrush is an easier install
use hard ware store T bracket,,L brackets & barrel ajusters
retain the stock air cleaner system, the cone filters hurt performance
there can be a small boost with rapid fire plugs ,but you are better off just going with stock A.C. delco
people have gotten 140 horsepower out of the duke ,but you have to rebuild the engine & spend a lot of money
the best course of action seems to be to just do a major tune,enjoy drive maintain then in the future sell your Fiero 4 & buy a V6 fiero
fiero,s are cheap !! this is better than doing an engine swap,unless you get the parts practically free

Congratulation! I also have a 85 2M4 that I bought 10 months ago and recently started driving every day. I have mine running well with good throttle response and performance. What I have done so far is replace the coil with an Accel coil and accel high performance wires and blocked off the egr and removed it. Also took off the stock cat, a high flow unit is much freer flowing. When I took off the egr I was able to advance the timing a little to about 10 degrees. All of this has vastly improved throttle response and now I have a car with good performance and great gas mileage and its a blast to drive. It also sounds great. My next thing to do is take the throttle body off and remove the intake baffle and clean the throttle body with carb cleaner.

Enjoy your new ride.