Balance Pipe Manifolds On Rb26

[Swiper the Fox]

Just did some back to back testing on our car with HKS low-mount balance pipe manifolds.

Our car runs HKS GT-RS turbos and the car suffered from the dreaded turbo shuffle. This is not a problem when racing but on the street it made the car really frustrating to drive. As the car started to build boost it would 'choof' its head off.

Replaced the HKS twin low mount manifolds with the balance pipe items and 'hey presto' problem is completely gone. The car is a lot more streetable and driving on the road is now a lot less hassle.

But....

It seems to have softened the car up a little, not coming on boost as hard and appears to have lost a little bit of power overall. Will be dynoing the car on friday to see if my observations are correct.

Edited May 11, 2008 by DiRTgarage

[GeeTR]

It seems to have softened the car up a little, not coming on boost as hard...

Would this be due to the loss of the "twin scroll" effect i wonder?

Edited May 11, 2008 by GeeTR

[Guilt-Toy]

such little turbos for soo much power!

good luck with it

[paulr33]

id say the shuffling is as GTR said is from the twin scrolling style setup, across the manifolds

when you use the balance pipe, it does as the name implies, balances the exhaust gas across the manifolds

but that probably gives a drawback and takes away the splilt pulse style setup

[arep3]

Interesting. Looking forward to seeing the dyno chart

[arep3]

Hey Paul, whats the quickest you have got those RS's to spool at?

[Gav]

I saw no loss of power when I changed from split HKS manifolds to the joined type. It actually helped the spool up because they weren't fighting against each other.

[jeffworld2]

what else can one do to help lessen turbo shuffle? i have the same thing and its like driving a train at certain speeds

[NYTSKY]

Jeff,you car makes the exact same noise as Pauls car. Same BOV aswell i think.

[The Mafia]

hey, could you reduce the second problem by putting a smaller balance pipe on?

[jeffworld2]

dave, dont think you have heard the problem, as you got mainly wot

[Angus Smart]

i think i had a similar problem with my gtr, tho i didnt really care too much for it.. i can make the car do it for pretty much the length of the m5 motorway.

it often sounds like a chu chu train just when coming on boost slowly, does not really happen with wot. or notice it then anyway.

[jeffworld2]

angus smart that is the one lol.

especially on the freeway, it does it all the time, unless you give it enough throttle for it to take all the air, then you spool up instead, and let off to slow down and then resume chu-chu, chu-chu-ing.

wouldnt be so bad if it was just quieter

[Swiper the Fox]

angus smart that is the one lol.

especially on the freeway, it does it all the time, unless you give it enough throttle for it to take all the air, then you spool up instead, and let off to slow down and then resume chu-chu, chu-chu-ing.

wouldnt be so bad if it was just quieter

up hills on light throttle was murder

[DRIFTER]

big single fixes this problem right up.

[rob82]

What air filter setup have you got - have you tryed removing the air filters and see if the problem goes away?

[Swiper the Fox]

big single fixes this problem right up.

and turns the car into a lagpig

[sh@un]

wonder if turbo shuffle affects the R35? haven't read any comments suggesting so yet...

[jeffworld2]

my car is "speshool", so if you have any solutions for the 26dett let me know and i can figure it out on my 25dett

[Adriano]

wonder if turbo shuffle affects the R35? haven't read any comments suggesting so yet...

I doubt it, as the turbo systems are completely separate, for the same reason the z32's dont seem to have the problem. I wonder if the shuffle is the turbo's causing each other to go into surge, and building up a pressure harmonic between the two?

Edited May 13, 2008 by Adriano