Tech / General EngineIs your car making a strange sound or won't start? Thinking of adding power with a new combination? Need other technical information or engine specific advice? Don't see another board for your problem? Post it here!
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I took my '90 Formula with an '89 LB9 to the dyno today. It's a dual-cat car that is fairly stock -- SLP cat-back exhaust, K&N filter and a crank pulley (I don't think it has a full set of aftermarket pullies). I wanted to get a baseline before installing headers this weekend.
Anyway, it put out 209 hp @ about 3400 rpm and 275 ft-lbs of torque @ 4400 rpm to the wheels. With about 80K on the engine, I would have been happy with anything over 200 for the HP. We did three pulls, and everything was within 1 hp/tq.
Let us know what kind of difference the headers make. It isn't often people will take the time to dyno the chassis before and after a single mod, so this would be really good data to have.
__________________ Later,
Vader
- - - - - - - - - - - - - - - - - - "Everything should be made as simple as possible, and not one step simpler."
Originally posted by slow305 I took my '90 Formula with an '89 LB9 to the dyno today. It's a dual-cat car that is fairly stock -- SLP cat-back exhaust, K&N filter and a crank pulley (I don't think it has a full set of aftermarket pullies). I wanted to get a baseline before installing headers this weekend.
Anyway, it put out 209 hp @ about 3400 rpm and 275 ft-lbs of torque @ 4400 rpm to the wheels. With about 80K on the engine, I would have been happy with anything over 200 for the HP. We did three pulls, and everything was within 1 hp/tq.
You sure you didn't mean 209 hp at 4400 rpm and 275 tq at 3400?
Oops, sorry. My computer mysteriously shut off as i was typing the first thread, and I didn't think it went through.
Edit: Yup, I'm just plain retarded. The big curve is torque and the little curve is horsepower, right? I guess the confusion is a result of my background in 4-banger imports. Should be 275 ft-lbs of torque at 3400 and 209 hp around 4400.
Should be 275 ft-lbs of torque at 3400 and 209 hp around 4400. 
