xvampyrex

I have a bunch of questions that just came to mine and I really want to know all of it because since I dont have the money to do a TII swap I want to make my N/A faster than it is...without porting it(I cant port it because I dont know how to do it and I dont have the money for it) so I was wondering all of this:

***Note***most are n00b questions

1) What is the gain by putting on headers on it?
2)What is the best size for the piping and the best exhaust for the car to gain power?
3)What are the pineapple 6-port sleeves and how do they work/ what is the gain?
4)Should I upgrade my injectors? and to what?
5) Suggestions(type in any suggestions you also may have)

NZConvertible

They improve the shape of the inside of the auxiliarly port sleeve, to improve airflow. Nobody (including Pineapple) seems to be able to prove what the gains are, but 5hp seems to be the most common number.

No. The stock injectors can support ~250fwhp, which you won't get without an extreme streetport or bridgeport.

xvampyrex

Alright thanks NZ Hmmm I might look into those sleeves....Also is there ANY way to hit 200WHP on an N/A non ported (I doubt it but I just want to know..)

koukifc3s

iTrader: (3)

you can get pretty close to 200 fwhp

ddub

1) Better flow and better design than the stock exhaust manifold, plus if you get something like the RB header/presilencer combo it will get rid of all of the cats and that will show better gains. You can also do a test pipe in place of the cat instead of the silencer. If you intend to keep the cat with an RB header you'll need a custom catback for it to fit. Also, if you get a road race header you can have a true dual exhaust system which shows nice gains from what I hear (personally I have a collected RB header). Don't expect to have any cats with the road race header and don't expect to pass emissions with no cats.

2) With a collected header, 2.5" the rest the way back is good. With a road race header (1 pipe for each exhaust port) I think it's something like 2" all the way back. As for which exhaust is best, I'd think an RB collected header with a presilecner or test pipe and then a SINGLE exhaust catback 2.5" with a big straight through "can" would be the least restrictive, most power, and lightest you can get (less weight=faster car too!)

3) Pineapple sleeve inserts go into your aux port sleeves and smooth out the transition/flow into the 5th and 6th ports. Better/smoother flow=gains, how much not sure.

4) No, not unless you're putting down some serious power or going nitrous.

5) Suggestions:

- Full exhaust header back with the least amount of restrictions as possible
- Intake, possibly cold air with as big of piping as you can get away with
- Weight reduction, less weight makes for a faster car
- Lightweight flywheel
- Intake manifold/TB porting
- Better tires and stiffer suspension = better launching and grip. Plus a better suspension will allow you to handle better as well
- Nitrous (if you do this then you might wanna upgrade your fuel a bit)
- Better plug wires and something like an MSD6A or the like
- SAFCII with wideband 02 sensor and afr gauge and tune it

Can't think of anything more at this time, but take your pic of the suggestions.

Impreza2RX7

For the amount you would spend on mods, you could probably sell your N/A and get a TII with the difference..

ddub

Maybe if you save your money. If you plan on doing like 1 mod every so often and having the whole car built over a long period of time, then no.

NZConvertible

Nonsense. You can put a cat into any exhaust system.

snub disphenoid

When my car was in its prime it was probably a low 15-second car. I repeatedly walked on my friend's 944. So an NA won't be a really fast car, but you might actually like it.

BlaCkPlaGUE

Curious, but where can I buy the pineapple sleeves?

NZConvertible

Pineapple Racing

wthdidusay82

iTrader: (15)

i have a friend who custom builds rotary engines and can rebuild your engine with all new parts street ported or bridgeported , for 1200 with new seals etc N/A, my friend owns a 88 mazda turboii that runs 11s in the 1/4 mile. and n/as running 11's. although bridgeporting makes your car very fast, it is also very loud and illegal. shooting 3 foot flames out of the exhaust. n/a gets 260-280 bridge ported, 180-220 street ported.

wthdidusay82

iTrader: (15)

horsepower that is

wthdidusay82

iTrader: (15)

i want to get my engine bridgeported, but i really dont know the life expectancy of any engine ported like that, or what kind of upgrades youll need to make . any ideas on how long your engine will last bridgeported n/a, depending on your upgrades. do you think you should convert to 5 lug if you only have 4 lug ?

rmills1276

just bolt on turbo parts and say hello to a high compression turbo motor. ive heard claims of 300whp on the stock turbo at 13psi.

Aesop Rock

whoa.....ok? so what does his car have to do with his ability, and Kevin ar rotary resurrection rebuilds, and streetports engines.

yes, it provides you with better brakes.

yea, right and I can close my eyes think of a color and my car will be that color when i open them. Its a difficuilt process to turbo a 6port.

oztofrdm

dose anyone have a hp range for a half bridge port

Aesop Rock

185-190 hp? with supporting mods

oztofrdm

so a "large" street port would be better as in Higher hp gains

Aesop Rock

the bridge will give more power, but be less "streetable" as it will be hard to maintain an idle, a full bridge could put you around the 200hp mark

ddub

Ok fine, but I was just saying that because it is not easy at all. IF you are using the road race header it's a lot tighter and harder to fit 2 cats on each pipe, and since rotaries run so hot you can only use certain cats. Also, for the cats to work properly they need to be fed air, so you'd have to figure out a way to route the split air pipe to both of them. It'd be a lot of work was what I really meant.

1RevvinFC3S

Wait a minute, my car don't even know the definition of "idle". Is that the reason that bridgies aren't considered "streetable"? I mean, I don't mind the noise or the 3 foot flames, but are those the only reasons, or is engine life significantly shortened?

Aesop Rock

engine life is shortened, but not drasitcally, a halfe bride is pretty decent for street use, but forsome people anything that isn't as reliable as a honda civic, its not streetable

oztofrdm

yea but thats why we drive rx7s
its all about driving fast
but, dose a half bridge have the crappy idle of a full bridge (im tring to deside between the half and a street port)

1RevvinFC3S

I have to keep my car above 1,000 rpms so idling isn't a big issue with it. I just need mo powahs!!!