I was curious what ya'll thought the best way to increase the N/A speed off the line. When I open up my port I don't really want to lose much on the top end.

 

Star with some custom ground camshafts.

 

You...are an ***

 

oh man...this is a good canidate for that picture of the teenager with the nitrous bottle saying "dude, your getting nawwwwwwssssss" but seriously just do a search on n/a performance upgrades there are a million threads about it.

 

Those babies will make a better difference than the iridium spark plugs I put in my diesel pickup.

 

It's pretty simple - Less weight & It needs to breathe.
Header, exhaust, cold (ram) air intake, port job.
In the drive line: LSD & a high final drive ratio.

 

Putting Miata Gears in wouldn't hurt, cuz it makes 1st a little taller, 5th a little shorter, and it puts you right back into the meat of the powerband with every gear change.

 

miata gears? i didn't even know that was an option.

 

4.30 rearend

 

Go in the archives and look for a thread like "Beefy NA" or something like that.

 

get a NX N-tercooler instant 50 hp for $599 USD!!

and thats out of ur air-to-air inter-cooler!!

 

Header Is key.

 

do headers really make that big of a difference in power? the stock exhaust manifold looks to have no restriction...

 

I think the stock manifold has a humongous restriction. As I understand it you will get more power out of a header than removing/replacing your cats.
Someone correct me if I am wrong.

 

Are you serious?? Look at the way the manifold is shaped. The exhaust comes out and hits a wall, then has to turn a 90* angle.. IMO thats a major restriction...

 

if the headers are seramic coated then they are better but if there not, all your doing is overheating the exhaust, your bound to crack something sooner or later

 

Care to explain this theory?? Many of us are and have been running a header that is not Ceramic coated for years, with no adverse effects. What exactly would I "crack" using my header? How would a header overheat the exhaust any more than the manifold? All that a header does is smooth out the flow to increase the velocity that the exhaust can be exhumed from the engine.

 

What RXMFN7 said.

A header smooths out the flow of the exhaust making it less restrictive that way.

Headers will crack after many MANY years usually. I don't know anyone with a RB header which has gone bad yet.

Ceramic just helps insulate keeping the heat from other under the hood parts(intake),etc.

The only thing I could think of that would crack a header would be tossing Ice water on one instantly after driving a lot.

 

so lets say u do this....u put stright pipes for ur cat, and then put a header on. what kind of whp can we expect from this mod?

 

Not sure exactly since I have Bonez Super flo with High flow cat but I heard about 15 don't know if it's RW or Flywheel. Check out RacingBeat's site and it will tell you.

 

well did u feel a big increase in power once u put the header on? or do u not kno cuz u put the high flow on at the same time?

 

A header is known to produce 10-15 more whp on the 13B in best cases. Highflow cats, presilencers or straight pipes seem to give a milder change in performance according to the reports I have read here.

And one other thing, why does this topic keep coming up every three days?

 

It keeps coming up because we N/A folk are forming a secret army against you turbo guys. See those black helicopters in the sky? You didn't really think that was just the UN did you?

 

why the hell would you want a shorter 5th?

 

My friend removed his air filter cuz it was "restricting" and i imagine leaves **** got sucked into the intake, his compressions dropped immensley.