Exhaust System For Gt-R

[RCCC]

Has anyone installed the GTC Titan full exhaust, what are they like? Are they the best on the market or is there something better?

Thanks

[domino_z]

best on the market would be some 10k+ premium jdm from the likes of kreissieg, powercraft etc

of you're interested in the gtc, id just go with the local offering from willall - design looks similar

[Snowman]

I haven't seen a better quality product than the Akrapovic system. If you are in Vic I'd be happy to show mine for sound and fitment.

[RCCC]

How much is the full system? All the good stuff happens in VIC, I am in NSW

I haven't seen a better quality product than the Akrapovic system. If you are in Vic I'd be happy to show mine for sound and fitment.

[Speedah]

How much is the full system? All the good stuff happens in VIC, I am in NSW

Talk to Tunehouse in Sydney for a price on an Akrapovic

[Snowman]

Yeah I got mine locally for cheaper than I could import one for - good representation in Oz for Akrapovic which is a nice change.

Can check with the Oz agent for the best place locally to get one from.

http://www.evlmotorsports.com.au/

The CF tips are especially sexy if you aren't running decatted set-ups. (The titanium ones are sweet too)

[Martin Donnon]

The Akro system is very nice, however it does tend to hang a little low in the middle section on the cars I have seen them fitted to. The number of flattened GTR tail section exhaust pieces I have seen from straddling a kerb at the race track....

[domino_z]

i bought my exhaust direct off alibaba from one of the ti exhaust manufacturers in china

it's 90mm, sounds great with de-catted downpipes and catted midpipe (didnt gain much sound when i added this to my midpipe only though - it's same layout/design as oem afterall), smooth quality welds inside and out, and looks even better

the only thing is i ditched the tips that came with it - i used Garage Active tips instead which i alrready had

Edited November 14, 2011 by domino_z

[bcl]

I had the Akrapovic evo Titanium exhaust (with carbon fibre tips) fitted to my 2011 R35, supplied and fitted by Tunehouse in Sydney. Tunehouse are a local distributor of these exhausts. ( http://www.tunehouse.com.au/ )

If you want a premium exhaust it is pretty hard to beat. Akrapovic are one of the leading aftermarket exhaust systems makers in the world. http://www.akrapovic.com/car-exhaust/

There is a weight reduction of 17kg with the titanium system..

I had it dyno'd before and after on a Dynapack hub dyno for good benchmarking, on a stock car.

Another reference:

http://www.southernc...ust-p-3272.html

I have no problem believing this system will easily support far higher power levels.

Sound is noticeably deeper and sportier than standard; I think it sounds far louder if you are outside the car than if you are in it. It has more of a "Euro" sound, I think it has a far better sound than the jap exhausts. With the windows up you will hear the exhaust, but I'd rather hear an exhaust than tyre/road noise. This exhaust is a good compromise without upsetting the wife. I have 5 turbo cars with exhausts ranging from stock quiet to very loud, and this one is in the middle with regard to sound db, but I think easily has the best note.

Results:

1. Exhaust benchmark

Red is after exhaust

Green is baseline

Peak power is up from 346 to 370awkw; up 6.9.0%

Peak torque is up from 611 to 629NM; up 2.9%

Torque is up a maximum of about 7% at 3200rpm, but that increase reducing up to 4700rpm, then noticeably increases again above 6000rpm.Power increase was up around 20rwkw, but really only seen over 5500rpm wherethe stock car flattened, but with the exhaust the power kept increasing. Ithink the increase in top end was a good pointer to its capability if pushed further.

If you look at the akrapovic dyno graph at http://www.akrapovic...9/evolution-65/I'd say they are almost spot on, except that I got more top end from 5500 rpm than what they claimed on their dyno graph (they used a 2010 model whereas I have a 2011).

2. 1st very conservative Ecutek tune, no other changes otherthan exhaust.

Then Tunehouse added a very conservative starting Ecutek tune with just 1 pound extra boost (peak boost 15lb compared with 14 stock), resulting power was up around 11% from 2500rpm all the way to 7000rpm. Main difference isfelt from 2500 to 3500rpm, with torque up around 25%, and I believe that has alot to do with bringing boost in earlier, and that is the area where the akrapovic exhaust excels. That makes the car far more flexible and better carto drive, and it pulls far stronger from 2000rpm.

Excellent jump in power and torque everywhere; boost isbrought in earlier.

Compared with original baseline, torque is up 30% at 2500 and up 25% at 3000rpm, so it is far more responsive low down and far more driveable.

Peak power is up from 346 to 384awkw; up 11.0%

Peak torque is up from 611 to 680NM; up 11.3%

3. boost used for that tune :

More boost under 3200rpm, otherwise peak boost up just 1lb ;14lb to 15lb ... bugger all.

So I and tuner (Tunehouse) are very happy with the exhaust choice, and a very good base from which to push higher if required.

It is also of the highest quality.

Brian

Edited November 14, 2011 by bcl

[domino_z]

their dyno is reading very high

[zebra]

I might have to take my car there lol

P.s I dont believe you when you say your exhaust is a china jobbie lol...looks too good

[domino_z]

me too!!

i want some baller dyno numbers - might even crack 500

i took a punt and was very surprised when i peeled off the chinese bubble wrap

Edited November 14, 2011 by domino_z

[bcl]

Maximum dyno numbers are academic; mph down the 1/4 is the best indicator.

Dynos are a tool, and best looked at that way.

Brian

[zebra]

I have always stayed away from alibaba...thought it was dodgy as....turns out I may be wrong lol

[xALmoN]

alibaba is just a buy in bulk listing website.

[zebra]

Sweet just signed up...damn they have some stuff....might bring in a heap of RC stuff

[domino_z]

alibaba is hit or miss......bit like ebay

afaik there are two main ti exhaust manufacturers in china - jiajun and gzy (which is where mine came from)

imo jiajun quality isn't there, just like majority of the carbon parts coming out of china atm - with exception of revozport and top racing which in my experience were even better quality than japan's zele carbon

there are bargains to be had, but keep in mind alot of factories work on minimum order quantities - you may get lucky and they'll sell you a single unit if they have stock

but they wont get the manufacturing team away from making ipads for some aussie guy who wants some ti underbody bling

Edited November 14, 2011 by domino_z

[g35me]

alibaba is hit or miss......bit like ebay

afaik there are two main ti exhaust manufacturers in china - jiajun and gzy (which is where mine came from)

imo jiajun quality isn't there, just like majority of the carbon parts coming out of china atm - with exception of revozport and top racing which in my experience were even better quality than japan's zele carbon

there are bargains to be had, but keep in mind alot of factories work on minimum order quantities - you may get lucky and they'll sell you a single unit if they have stock

but they wont get the manufacturing team away from making ipads for some aussie guy who wants some ti underbody bling

mmmmm ipad

[domino_z]

hahaha i refuse to get sucked into the apple product compatibility trap

[RCCC]

I had the Akrapovic evo Titanium exhaust (with carbon fibre tips) fitted to my 2011 R35, supplied and fitted by Tunehouse in Sydney. Tunehouse are a local distributor of these exhausts. ( http://www.tunehouse.com.au/ )

If you want a premium exhaust it is pretty hard to beat. Akrapovic are one of the leading aftermarket exhaust systems makers in the world. http://www.akrapovic.com/car-exhaust/

There is a weight reduction of 17kg with the titanium system..

I had it dyno'd before and after on a Dynapack hub dyno for good benchmarking, on a stock car.

Another reference:

http://www.southernc...ust-p-3272.html

I have no problem believing this system will easily support far higher power levels.

Sound is noticeably deeper and sportier than standard; I think it sounds far louder if you are outside the car than if you are in it. It has more of a "Euro" sound, I think it has a far better sound than the jap exhausts. With the windows up you will hear the exhaust, but I'd rather hear an exhaust than tyre/road noise. This exhaust is a good compromise without upsetting the wife. I have 5 turbo cars with exhausts ranging from stock quiet to very loud, and this one is in the middle with regard to sound db, but I think easily has the best note.

Results:

1. Exhaust benchmark

Red is after exhaust

Green is baseline

Peak power is up from 346 to 370awkw; up 6.9.0%

Peak torque is up from 611 to 629NM; up 2.9%

Torque is up a maximum of about 7% at 3200rpm, but that increase reducing up to 4700rpm, then noticeably increases again above 6000rpm.Power increase was up around 20rwkw, but really only seen over 5500rpm wherethe stock car flattened, but with the exhaust the power kept increasing. Ithink the increase in top end was a good pointer to its capability if pushed further.

If you look at the akrapovic dyno graph at http://www.akrapovic...9/evolution-65/I'd say they are almost spot on, except that I got more top end from 5500 rpm than what they claimed on their dyno graph (they used a 2010 model whereas I have a 2011).

2. 1st very conservative Ecutek tune, no other changes otherthan exhaust.

Then Tunehouse added a very conservative starting Ecutek tune with just 1 pound extra boost (peak boost 15lb compared with 14 stock), resulting power was up around 11% from 2500rpm all the way to 7000rpm. Main difference isfelt from 2500 to 3500rpm, with torque up around 25%, and I believe that has alot to do with bringing boost in earlier, and that is the area where the akrapovic exhaust excels. That makes the car far more flexible and better carto drive, and it pulls far stronger from 2000rpm.

Excellent jump in power and torque everywhere; boost isbrought in earlier.

Compared with original baseline, torque is up 30% at 2500 and up 25% at 3000rpm, so it is far more responsive low down and far more driveable.

Peak power is up from 346 to 384awkw; up 11.0%

Peak torque is up from 611 to 680NM; up 11.3%

3. boost used for that tune :

More boost under 3200rpm, otherwise peak boost up just 1lb ;14lb to 15lb ... bugger all.

So I and tuner (Tunehouse) are very happy with the exhaust choice, and a very good base from which to push higher if required.

It is also of the highest quality.

Brian

How much did the exhaust and the tune cost?