exhaust question

[sleepyS13]

I wanted some opinions. did anyone really notice a difference in power with exhaust upgrades, or someone actually have dyno results. idont want to do it next just to gain 8 lbs. of tqe. and 5 hp. its either exhaust or a clutch next.

Right now my fairly new stock clutch slips on power shifts only.

[JJ240]

Exhaust upgrades are the #1 best way to bolt on power. Exhaust is one of the easiest and also one of the most effective mods you can do.

[hazardous240]

get a hot shot header you love the results:ylsuper

[Evil98Silvia]

Exhuast will give you just a few HP. Its not GIVING you any HP either, its freeing trapped power that is being restricted. Dont get a big ol 3 inch exhuast though. You want your exhuast air to travel hot and fast, you dont want it to move all slow through the pipes. SO a 2.5 inch or so exhuast will do just fine. The apexi N1 dual is what I have scene have the best results. Its a good N/A and turbo exhuast do to its dual 2.5 inch pipes.

Robbie

[SHiFT]

yeah i agree, exhaust is one of the best mods you can do. Heres a pic of the stock exhaust compared to aftermarket, when i saw the stock one i started laughing its pathetic (scroll down to half page, pic on the left). Its compared to the apexi dual N1, the single n1 is not segmented and has much straighter bends than the dual.

http://www.cardomain.com/membe...age=4

I just bought a apexi n1 single cat back system for $454 shipped from a real great guy on ebay. it was 85 to ship because the box is MASSIVE, the box itself is 9 ft long and weighs 70lbs, its freakin huge. I got the 3inch because I'll be doing a custom turbo KA setup in the future. Exhausts give you about 10 hp and 10 torque or so.

[Evil98Silvia]

yeah i agree, exhaust is one of the best mods you can do. Heres a pic of the stock exhaust compared to aftermarket, when i saw the stock one i started laughing its pathetic (scroll down to half page, pic on the left). Its compared to the apexi dual N1, the single n1 is not segmented and has much straighter bends than the dual.

http://www.cardomain.com/membe...age=4

I just bought a apexi n1 single cat back system for $454 shipped from a real great guy on ebay. it was 85 to ship because the box is MASSIVE, the box itself is 9 ft long and weighs 70lbs, its freakin huge. I got the 3inch because I'll be doing a custom turbo KA setup in the future. Exhausts give you about 10 hp and 10 torque or so.

Dont get that confused with wheel hp. At the shop the highest Ive scene any exhuast on a stock 240 was about 4hp or so. Exhuast is mostly to help out with future mods like cams, headers, intake, porting and polishing that really push that air out. And of course if youre turbo then you need a 3 inch or more depending on how much psi your running.

Robbie :ylsuper

[SHiFT]

Dont get that confused with wheel hp. At the shop the highest Ive scene any exhuast on a stock 240 was about 4hp or so. Exhuast is mostly to help out with future mods like cams, headers, intake, porting and polishing that really push that air out. And of course if youre turbo then you need a 3 inch or more depending on how much psi your running.

Robbie :ylsuper

well you don't need 3" and I would not recommend going over 3". my brother has a mr2 turbo and has 2.5" crush bent piping, it runs 12s. that figure kinda makes me wish i had 2.5 but, oh well.

[TomsMR2]

3.0L NA's cant even use 3in exhaust pipes. stick with 2.5in!

that apexi dual looks HEAVY. 4.5 heavier than stock!? thats obsurd... one of the benefits of aftermarket exhausts is that its lighter, not heavier! buy something simple and light, it'll perform better.

[SHiFT]

well I did read reviews on the N1 single before I bought it, basically the consensus was little to no low end torque loss, but definately noticable high rpm gains so thats why I bought it.

[TomsMR2]

N1 is the most mind bogglingly loud type of muffler. does the apexi system have a resonator in the middle or something?

i like dynomax/magnaflow muffler because just one small muffler seriously muffles ALOT of noise. removes the need for a primary resonator (extra unwanted weight).

in my experience, N1's are louder than cherry bombs (glasspacks)..

.. still, the best exhaust is a custom exhaust

[sleepyS13]

thanks for your input. extra thanks to evil 98 thats what i thought would be typical. to pay 450 for 4-5 hp gain is not ideal for my budget. I want the car to be fast not just feel or sound fast

also thanks for the input on the noise of the n1 i hate noisy exhausts as i have seen many fast imports that are fairly quiet/ANYone ever heard of a turbolator , its a variable capacity inline muffler- has a throttle plate in it that opens as flow increases.

Also i run 50/50 mix of alchohol and distilled water in my water inj. sys. and one night after driving reall hard i smelt burning metal and when looked under the car the cat was cherry foo*in red. I took it apart the next day and it looked normal and there is no power loss , but i thought i had fried it at first(that night i was running 90/10 ratio alchohol.)Could running alchohol require a larger exhaust piping than normal.

THANKS FOR YOUR INSIGHT.

[TomsMR2]

to pay 450 for 4-5 hp gain is not ideal for my budget. I want the car to be fast not just feel or sound fast

typically, exhausts on 4cyl cars give very little to no gains. you'll notice an improvement in throttle response, but little power is to be gained.. this doesnt count headers tho.Quote » ANYone ever heard of a turbolator [/quote] gimmic crap, avoid at all costs. the valve actually causes turbulance.Quote » Also i run 50/50 mix of alchohol and distilled water in my water inj. sys. the cat was cherry foo*in red. (that night i was running 90/10 ratio alchohol.)Could running alchohol require a larger exhaust piping than normal.[/quote]

as far as i know, alcohol burns a bit hotter. a 50/50 mix is ideal, but im also not sure why you're running alcohol injection on a NA car.. its basically worthless. you're not creating enough intake heat to necessitate water/alcohol injection.

also, alcohol is cleaner burning, so theres less combustion byproducts. it definately doesnt need a larger exhaust.

as for the cat glowing... it could be from 2 things:1) waaaaaaaay over rich. like if you're running super high fuel pressure or larger injectors. 2) the cats clogged to hell and the piping is too small. the gas is backing up in the system and over heating the cat. check/replace the cat and get an exhaust

[sleepyS13]

i did water/alchohol injection so i could run a lot of advance on 87 oct. fuel. I also gained signifigant amount of gas milage

swapped cat for one from parts car. and monitored o2 sensor while friend drove. it shows normal operation..cat hasnt glowed since so it was probably the 90/10 mixture that did it.

[silviaNE]

when i installed my blitz nurspec r, i noticed some power lose below 3000rpm, but the topend opened up a bit, and she the engine reved much smother, befor exhaust, car seemed a little hesitent, maybe due to old rusty plugged up exhaust on my 95 s14. All stainless construction, 80mm piping and perfect fit.

blitz mo betta

if you want to see pics of new exhaust and turbo/manifold, go to turbo ka section.

[Evil98Silvia]

I dont know what you guys are talking about with the N1 being loud. I hope your talking about the N1 single and not the dual. Because my n1 single sounds stock at idle, just deeper. My friends 350z is louder than mine at idle. When I step on it of course it gets louder but no where NEAR any other exhuast.

Robbie

[SHiFT]

I dont know what you guys are talking about with the N1 being loud. I hope your talking about the N1 single and not the dual. Because my n1 single sounds stock at idle, just deeper. My friends 350z is louder than mine at idle. When I step on it of course it gets louder but no where NEAR any other exhuast.

Robbie

Thats great to hear, I'm putting my N1 single on tomorrow when I get my car back from the paint shop, can't wait. Yeah I dunno what the deal was with bashin the N1 exhausts, they're not that loud as 98silvia said, and they do have a presilencer on them.

[Evil98Silvia]

Thats great to hear, I'm putting my N1 single on tomorrow when I get my car back from the paint shop, can't wait. Yeah I dunno what the deal was with bashin the N1 exhausts, they're not that loud as 98silvia said, and they do have a presilencer on them.

WHOOPS! Sorry I have the N1 duals, i accidently put single. The n1 single is a bit louder and a little to big canned if you ask me. My buddy has it on his 2.5 rs subaru. It sounds nice and deep just like the n1 dual, just louder.

Robbie

[SHiFT]

well thats cool, turns out I won't have it today...the shop is STILL not done with it I'm seriously getting pissed off, and to top it off, the replica spec K wing i got from silviaparts.com apparently doesn't even ****ing fit on the damn trunk because its oversized by one and a half inches on each side. WTF! ughh

[JJ240]

What year K's wing? My 93 coupe has the same wing as the K's. Have any pics of the one you bought?

[SHiFT]

no pics yet, but i'll put some up if in fact it is the wrong size, I can't believe that they would make a wing that wouldn't fit, I'll get all the details on thurs. If you go to http://www.silviaparts.com and click on s14 that is what it is...supposedly.