Keep Stock Exhaust But Get Gains From It, Possible?

[Elegant Skyline]

Hey guys

How can i keep my stock dual tips but still be able to modify something to gain maximum gains or flow from it as well improving the RB note by not too much to attract negative attention but still an improvement over dead stock sound.

Stock looking is clean IMO

[Ben C34]

The rear muffler is massive and likely restrictive. Better option would be buy a similar but good rear muffler and use that.

Of course you could get the centre muffler removed and see how that goes, but your car won't go hard untill you get a decent turbo and exhaust.

Better option don't bother.

[Ben C34]

Stock is elegant . Fast is not elegant.

Keep rolling the elegant skyline dude.

[GTSBoy]

This is easy. Cut stock twin tips off of existing rear muffler. Weld them onto new twin tip rear muffler as part of complete exhaust replacement. Make new exhaust 3" with big centre muffler and big rear. Add 4" bodied 200 cell cat* and full length dump+front pipe.

* 200 cell 4" cat recommended so as to not get too illegal and loud. 5" bodied 100 cell cat for maximum fasts.

[Kinks]

Possible, but very minor gains if any. You can replace the dump/front pipe with a 3" design, I favour the bellmouth as it gives plenty of space for post-turbo air to sort itself out. A higher flowing 200cpi cat is worthwhile too. However, the rest of the piping is 2.5" and has restrictive mufflers in it, this is good for quietness but not good for power.

You are best off talking to an exhaust shop to make something that looks factory (twin tips if you wish) and flows better than standard that isn't too loud.

[M@&k]

I had a stainless 3" exhaust from turbo back made up with twin outlets. Cost just over a grand, and gave good gains on stock turbo (~185rwkW, pod, exhaust, nistune) while staying fairly quiet. One of the best mods bang for buck I've done.

[sydking]

mild steel 3.5 inch turbo back with a single hooker mufler and de cat

I loved the sound mine made, soudned better than 90% of music on the radio too so i saved money not needed a sound system, woudlent be able to hear it anyway

[scotty nm35]

mild steel 3.5 inch turbo back with a single hooker mufler and de cat

I loved the sound mine made, soudned better than 90% of music on the radio too so i saved money not needed a sound system, woudlent be able to hear it anyway

You wouldn't last 5 minutes down in Melbourne. Haha.

The 3.5 inch Hooker mufflers have a 3 inch restrictor inside them, may as well go for a Chinese 3.5 inch muffler, it will flow better and probably be quieter.

Has anyone tried a Dynomax VT? The flap blocks off like a Varex, but opens on exhaust pressure. I assume it will make the setup a little laggy but it intrigues me a little. Decently priced at $150 odd too. Could make a good mid muffler if it isn't too restrictive when closed.

http://www.ebay.com.au/itm/191330618237?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1423.l2649

[sydking]

You wouldn't last 5 minutes down in Melbourne. Haha.

The 3.5 inch Hooker mufflers have a 3 inch restrictor inside them, may as well go for a Chinese 3.5 inch muffler, it will flow better and probably be quieter.

Really? http://www.tuffcarparts.com/index.php?route=product/product&product_id=268

i know i put a 3 inch tip on it so it didnet look to big out the back but im sureits 3.5"inside

Shoudlent be much of a restirction with 340 od KW

Still, a better exhaust is on my list of things

[scotty nm35]

I made 20-30 kw when I shoved the 3.5 Varex on the back, ditching the Hooker, but I did get rid of a few bends at the same time. It has a restrictor inside to accelerate the gasses, as part of it's chamber design.