Hks Gt-rs's Shuffle

[N1GTR]

Hey guys,

Here's the issue; On low load and cruise the turbos shuffle quite audibly on my car.

Here's the specs;

-RB30 bottom end (full forged)

-RB26 head, mild porting

-Tomei 270IN and EX cams 10.25mm lift

-Adj cam gears set to zero

-Hard pipe kit

-Stock BOV's

-Stock manifolds port matched

-Tomei dumps

-HKS front pipes

-HKS GT-RS's

-ARC airbox (the twin entry one)

-AFM's intact but not connected (ECU doesnt need them)

-OEM plenum

-OEM throttle bodies

So, a balance pipe has been suggested, but before spending another $1000 on the car, id like to hear first hand experiences from people who have fixed this issue

[Swiper the Fox]

Hey guys,

Here's the issue; On low load and cruise the turbos shuffle quite audibly on my car.

Here's the specs;

-RB30 bottom end (full forged)

-RB26 head, mild porting

-Tomei 270IN and EX cams 10.25mm lift

-Adj cam gears set to zero

-Hard pipe kit

-Stock BOV's

-Stock manifolds port matched

-Tomei dumps

-HKS front pipes

-HKS GT-RS's

-ARC airbox (the twin entry one)

-AFM's intact but not connected (ECU doesnt need them)

-OEM plenum

-OEM throttle bodies

So, a balance pipe has been suggested, but before spending another $1000 on the car, id like to hear first hand experiences from people who have fixed this issue

Join the inlets and exhaust mainfolds together....fixed.

or...drive the car with WOT...fixed

Edited February 4, 2009 by DiRTgarage

[paulr33]

the intake piping is the cause

is it bendy or straight

the accordian style piping reduces the shuffle

[DRD-00F]

Buy a bumbag and embrace the flutters!!

How long is it between shuffles? and how audible? the crossover pipe is the obvious answer but you can lower the volume a few different ways if you cbf with the pipe...

[Swiper the Fox]

I have done back to back testing with this shiz...joining the pipes kills the shuffle...instantly.

but it softens the turbo's up a little too.

[UWISSH!]

I have done back to back testing with this shiz...joining the pipes kills the shuffle...instantly.

but it softens the turbo's up a little too.

not in all cases, i have the HKS balance pipes and i still get a very slight shuffle, but it has improved it quite alot but yeh not totaly fixed

Edited February 4, 2009 by UWISSH!

[Swiper the Fox]

not in all cases, i have the HKS balance pipes and i still get a very slight shuffle, but it has improved it quite alot but yeh not totaly fixed

are your inlets joined?

is your tune good?

[UWISSH!]

yes they are

car was tuned by jim at crd

[donkey]

hey dirt garage, do you need to re. dyno the car if you install the balance pipe, is there a balance pipe you can buy, or are they custom made? i have -5's, custom piping, etc

cheers

[Swiper the Fox]

yes they are

car was tuned by jim at crd

wow...mine was perfect after the exhaust manifold balance pipes and CRD tune...i wonder whats different in your set-up to mine?

donkey...HKS make the manifolds...very expensive due to the fact they are highly sought after and now dis-continued. I recently saw a set on GTR UK and they wanted 1000GBP for them which is 2000AUD. I recommend a tune due to the fact the spool rates are slightly different and the engine maybe using different load cells from the map after the change is made.

Edited February 4, 2009 by DiRTgarage

[T04GTR]

hahahah stevo. single ftw

oh, pitty you have the stock manifolds. making a balance pipe could be a drama. a single butterfly inlet manifold would help alot. (more vacume to keep the bovs open...)

my 2c

ps.. you should try 2510 turbos.. uber shuffle.

[N1GTR]

Mansoor has 2510's

Ill try the balance pipe first and if that doesnt work then ive got no idea