jwbond

the sticky on exhausts on this forum was great! looks like the B&B is the best legal one you can buy.

anyhow i was interested to know what other upgrades can be done short of the greddy turbo (which i may get once i see how the reliability is on them).

are there any good ecu flashes? what kind of gains?

it seems that the intakes are more noise makers than hp producers...any thoughts?


basically i am looking for the biggest hp boost i can get with a naturally aspirated vehicle...anyone have good dyno results with specific products?

thanks!

StealthTL

iTrader: (1)

Midpipe and Canzoomer unit.

Take out the catalyst with a midpipe, then add a Canzoomer unit with the Stage 2 tune installed, or tune it yourself for maximum gains.

A lighter flywheel will make the engine 'feel' more responsive, and a pulley kit can save a couple of horses, but after that you are scraping the bottom of the barrel.

S

jwbond

what kind of hp gains can be seen with the Midpipe and Canzoomer unit?

any reliability problems possible with anything other than the stock flywheel?

Fanman

Yeah, Stelth is right. Midpipe & CZ unit.

The CZ unit has shown to give a real 15-25 whp when tuned properly. The midpipe is about 7-10, but some people have ran into the CEL with this because the O2 sensor goes off. Have to get a Casper O2 fooler with it. The aluminum Flywheel helps the car rev better but the installation is a bear. You have to drop the tranny, which can be quite expensive.

jwbond

and now for the dumb questions...what is a midpipe and canzoomer unit?

i am guessing a midpipe is just a replacement for the cat, but what the heck is a canzoomer?

also what are the avg costs? and anyone know a good shop near philly to do the work?



also if you were to add the b&b exhast, midpipe, and canzoomer would you theroetically have...

exhaust - 15 hp
cz - 15hp
midpipe - 7 hp

37 total hp increase? = 275 total hp?

rx8wannahave

How would you tune an engine yourself? Do you need alot of technical wisdom in regards to engines? Will the canzoomer ECU/piggyback increase fuel economy or has anyone had higher fuel economy numbers with a canzoomer???

I'm not yet ready to install mod's but I too would like to go the NA way instead of adding a turbo....at least at first.

Thanks for the posting this thread and your help guys!

Fanman

Midpipe = cat replacement pipe as you have stated (actually can replace the catalytic & resonator)

Canzoomer unit = ECU piggyback system. Usually the ECu from the factory runs rich. You can lean it out & gain hp. Look on the For Sale section & you can find them for sale. New it is like $800,

You are not going to get anywhere near 15 hp gain from a cat back exhaust. It will look like this :

exhaust - 3 hp
cz - 15-20hp
midpipe - 6 hp

24-29 total hp increase? = 262 - 267 total hp

Aoshi Shinomori

That's a pretty reasonable expectation for these mods. Porting your engine should work well with the other exhaust modifications. Take a look at the great renensis porting project, awesome read and great guys.

Mikelikes2drive

dont forget headers and an intake. Theres probably alot of things im forgettin right now too.

Nemesis8

iTrader: (3)

Here is a post I made back 8-3-04. It details most of the mods to gain RWHP. Happy shopping! :D

https://www.rx8club.com/showpost.php...&postcount=317

Fanman

Nobody has really designed a good header for this car yet. There are a couple out there already but the few that have been purchased (over $1000 !) showed minimal gains. Racing Beat has been trying to design and market a header but so far has only gotten abot 3 or 4 hp. Not enough to justify the cost of these (Probably $600-$1000). Intakes have shown about a 2-4 hp gain. May want to wait for the Racing Beat unit. I had the Rotary Extreme unit on my car. Definitely made it louder but not sure if it added much hp, maybe 2-3.

Japan8

Definitely wait for the RB intake. Turns out that is the same design as the one RG had been thinking of and started to work on (so he gave it up).

Total hp... IF the 8 is actually putting out 238hp at the flywheel that would be true, but chassis dynos say otherwise. Roughly 170-185 rwhp. So let's say you'll get a conservative 190-205 rwhp with a good tune.

Porting is still underdevelopment, but will be your biggest bang NA. Work done thus far has ben very promising. Current theory suspects that with a good port job, a well-designed header should net you some good increases. The other exhaust mods should only give a bigger increase at this point as well. There is another theory regarding modding the exhaust sleeves, but no work has been done on that yet, so it remains to be seen. In order to port your engine, it'll have to be pulled, so while it's like this, might as well use the opportunity to add that light flywheel.

For the noobs...what is porting? It is the piston engine equivalent of changing your camshafts and valves. Check out the threads in major horsepower upgrades for more info. RG has some good posts on it somewhere.