Hmm, first, I'm up here in Canada (please don't hate me) and in my province, I can tear the cat out of any car and not get fined for it, so emissions laws are very lienient.



Second, I'm looking for more of some increase in power regarding simple yet stylish bolt ons. The cold air (possibly) ram intake, definately a very high flow exhaust, and the manual boost controller, just raise the psi up a bit more.



Thanks for the help though, I found a really nice grey '90 Fc I like ;> But if I go N/A, is there any good way for simple horsepower?





*show me a piston, and I'll drive you a tragedy*

Oh, UniqueTII, thanks for the help *newbie, newbie*

porting and exhuast for the nas. turbo swap. 20b. its great that you have no emissions laws, thats how it is here. good luck

If you're looking for speed which it sounds like you are, you'd be better off with a TII. The NA's with basic bolt on's hit a roadblock with maybe a 10-20 hp gain (mostly exhaust work) and they still aren't fast. To get them on the level with a basically stock TII, you would need to open it up and port the engine (rebuild) which doesnt make sense $$ wise if you have the option to buy a good running TII. I think both series 4's and 5's have their common probs and unique probs.. most people prefer the S5 because it looks better. I like them both and performance is similar due to the weight diff at least on the NA's.

Well, that's one of the problems, actually. I hear every talking S4 and S5, and I really don't know the difference. I'm aware of the weight differences in each model, sure, but the S4 S5 thing is a little confusing.



Oh, and I'm really not looking for impressive top speed, I'm more concerned with the flow of gasses for now. Maybe adding nitrous down the road would be interesting, but just I just want to see my options for different setups.

series four are 86-88

series five are 89-91...as shane tramell already indicated..

series five have lighter rotors and flywheel and better intake efficency..

turbocharger for the tii model was also improved..control and size of the wastegate

aesthetic differences a well..

Oh, thanks. Must have missed that information. Then I guess I'm going after an S5 (89 - 91 right?)



Don't mean to sound like an idiot, but you can't learn anything if you don't ask questions. Thanks for the help.

The series 4 cars have a very basic, and dumb engine management system also. (that is my reason rob, you **** https://www.nopistons.com/forums/pub...1047683785.gif )

once you mod though, i prefer the mechanical OMP or else I'd be premixing. The only problems that i have with the s4 is that they are a nightmare electrically. I am currently rewiring the entire car from the firewall to the tail lights (engine already rewired). Oh and my s4 looks like an s5

I agree with that apex but the electrical probs seem to be common for all 2nd gens.. they just suck, mostly ground issues. These cars are old too now, even the S5's.