rondofj

bump for the weekend

Why not confirm with Nistune themselves. I think the auto gearbox has its own ECU but I could be wrong

Lol the power FC cant suck, it is a constant and proven in many cars. The tune can suck of course, and in my case as mentioned its had timing retarded big time everywhere. And power (lack of) been suggested to a restrictive cat. And of course its cheaper to replace the exhaust components in one go and have a touch up tune, and if it makes power then u know its the combination of these components that was the problem but wont be able to identify which one.. Which doesnt really matter when you are able to pick this cat for 30bux and Veilside oval for 50..

So u saying no need to put it on? What about my 2.7inch mid muffler necking on one outlet? Well it actually looks like it maybe 3 inside just the pipe is necked down at joint..? No idea why

And measured the guts of my xforce oval- 2.75 inches , well at least got a replacement now

Bought me a present, 3 inch used gutted cat and the Veilside Jasma oval muffler 5-6 threads up, its 3.5 inch straight thru however. Body size is 6X11X14.5 long in inches, my current xforce oval is 6X10X16 long so hoping the replacement wont be much louder. Now need to find the largest 3 inch oval mid-muffler I can cram under there, any suggestions? ;-)

Bump

Well.. I will get that cheap arse exhaust, at least the main element, (the gutted catco cat) is there as well as the 3" mid-muffler. I wont take that ugly canon though. I might just buy the Jasma oval above if I don't find anything better. Even Yavuz said my rear muffler might not be such a problem, but the cat definitely.. But you can see from previous pics the Xforce has a small hole outlet. If they fail to deliver results and come up with something else 'restricting my car',..well, time to move on...

Thinking of buying this oval veilside Jasma muffler as well but worried it will be much louder than my Xforce oval (I know its jasma approved, but the body is not too big..), it looks to be free flow? What do you guys think?

That's a bit farked then aye.. So most peeps just slap one on as long as its 3'' in/out...

Yeh was thinking so, waiting for sellers reply, how do i tell the mid mufflers not stepped down inside?

100 bux, I ain't using that cannon though, will look for another nice quiet oval without the small outlet like mine

lol...what system have you?

What do you guys think of this - ok or a pile of junk? The cat is a gutted catco item (what I was suggested with a bit of reluctance), the mid-muffler looks 3" in/out (no necking like mine), the rear muffler is a crappy jasma cannon but free-flow from the look of things. System is off a 33GTST goin for cheap ( I know 34 is slightly shorter) and the I'm thinkin of buying it..

Aggroman, u got a GTT, what cat, mid muffler n rear muffler u got?

Well..had the same car with exact same set up but with Nistune (now Power FC) tuned by JEM and they didnt mention a word about my exhaust! But they said intake charge is heating up and cannot take more boost, kinda tuned on edge..Tried to convince me to go FFP to get cooler temps but nah. Made more power on less boost too. Much snappier, torqueyer n more exciting overall but crappy economy and cruise/cold start/low load wasn't tuned well. Now this one with PFC and now I have an exhaust problem. Less power n less torque (at higher boost) deliberately to keep it 'safe'.. But perfect cold start and beautiful factory like low rpm street driving/cruise bar a couple minor probs. Both very reputable very well recommended tuners.. Who to believe? Obviously something fishy goin on..two different tuning styles and of course dyno variances..

Manual ECU mate, I can't confirm but I am extremely sure it will run in an auto car without any issue at all, as I have read numerous threads on this. You could even contact the Nistune guys to confirm : http://www.nistune.com/contact.php Or someone here could give a definite answer? cheers Ron

Aah I'm not as experienced on cars as you, but I still think my mid-muffler and rear muffler is a restriction from pics, don't you? Also that damn cat from what I been told.. confused ;- I mean from all the hundreds of cars and years they've done, its probably ok to take their word for it?

Well update, back from Unigroup yesterday afternoon, they didn't drop the exhaust to confirm its a restriction, but Yavuz explained to me again that in his 15 years there he has had so many cars where 8 out of 10 have an exhaust restriction, and usually always its the cat as well as other elements, so even though its a 3" in/out 100 cell metal cat, it is a restriction that will make a good difference when removed /gutted. I have no doubts on what both him and Mark said, plus he also said the mid-muffler is a restriction -(the 2.71" necked joint in the pics), but not as big a restriction as the cat but still advised me to change it. Lastly the main rear muffler itself is a restriction, but last down in terms of importance, so according to him the main one is the cat, then mid-muffler then rear muffler. Most Japanese (and some other) exhausts according to him n Mark have tapered down insides to control noise, so even though they may advertise as high flow 3" in/out, Mark said he wouldn't trust a muffler till he actually cut down and measured the insides of one himself. The safest (and also most expensive) way is a custom made exhaust but I ain't spending all that coin on a custom job for a few measly killawasps.. It does seem that they have among the lowest reading dynos in the country? And very safe/restricted and mild but not wild tunes..

Up for sale is a R34GTT ECU with Nistune type 4 board installed which has a tune file on it from JEM- made 286rwkw at 18-16psi on Precision 5558 turbo ( which is almost identical in size to a Garrett GT3076R). Will go on stagea (RB25DET NEO) as well as they are essentially the same engine/ecu minus traction control. So if you have a similar sized turbo and supporting mods, you can just plug in and drive away safely to your tuner for a touch-up tune which is cheap, generally $100-300. A full tune only (like what this ECU has) will set you back $700-900 at the usual recommended tuners. Its in perfect working order and there is nothing wrong with it, I have just gone down a different path, chasing more power/ more features in an ecu. $685 including registered post anywhere in Australia. Ron 0416424446, or pick up from Parramatta NSW

Wow thats a large power drop and nah, I will ask for my cat back to be dropped not plumb-back. Yeh no screamer for me. Thanks Kiwi, those parts are in NZ but I got the idea, will keep it oval though, are the cannon resonators/mid mufflers louder?

Looks like I might have to get another mid-muffler and main muffler, will keep it both oval, I dont understand how my mid-muffler has entry 3'' and exit 2.71''? That's confusing. Plus I got ripped when I asked for 3'' in/out xforce main muffler fitted, looks like it has a smaller guts now . When I got it couple years ago I saw that rear entry pipe joint was 3'' after fitting and thought thats correct. Where do I get a used highflow 3'' mid muffler and main muffler? Hard to find on ebay and forums, everyone selling cannons

Nope mate- overheating the turbine and intake charge because of backpressure- turbo has to work harder, engine more prone to detonate, thats somewhat what I understood from Mark

Behind my rear muffler- I measured 3 inches

Oops your post didnt come through until after I posted, Dale, yehthe guts of that thing looks small aye .. I ordered a 3' oval xforce supplied n fitted by Western Mufflers in Fairfield coupla years ago and thought thats what I got, doesnt look like it now..wtf