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32 GTR dump pipes

Boosting

By Boosting,
in Engines & Forced Induction

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Boosting Collaborator

Boosting

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Curious if any one knows if i put on after market bigger dump pipes it will increase perforamce and less lag..

Also my car is running very rich im assuming its the o2 sensors would this be the case or could there be another factor causing this.

One more for ya when i run 1 bar or 1.2 bar of boost my car surges is this due to not enough fuel getting there.

any help is much apreacitated,.

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Sydneykid Grand Master

Sydneykid

Posted
Posted
1. Curious if any one knows if i put on after market bigger dump pipes it will increase perforamce and less lag..

2. Also my car is running very rich im assuming its the o2 sensors would this be the case or could there be another factor causing this.

3. One more for ya when i run 1 bar or 1.2 bar of boost my car surges is this due to not enough fuel getting there.

any help is much apreacitated,.

1. R32GTR's have not so good dumps, so an upgrade is beneficial.

2. O2 sensors are irrelevant most of the time, they only run closed loop for idle and cruise. All R32GTR's I have seen benefit greatly from a tune, chip upgrade or ECU replacement (Power FC is the go)

3. Try new spark plugs with gaps at 0.8 mm.

Hope that is of some help:cheers:

SteveL Mentor

SteveL

Posted
Posted
do the 32's,33's and 34's have diffrent dump pipes to eachother?

R32 and R33 GTR's basically use the same cast iron dump pipe design and they are a bit restrictive. OTOH R34's use a thin-walled, welded stainless steel construction which have a larger bore and so flow better - definately an improvement, probably similar to some aftermarket designs.

Duncan Grand Master

Duncan

Posted
Posted

I'm certain that both 33 and 34 dumps are the same. 32 are 60mm, 33 and 34 are 70mm....big difference in total flow.

If you want a set of 34 dumps, Powerplay in Sydney have at least 2 sets second hand

SteveL Mentor

SteveL

Posted
Posted
I'm certain that both 33 and 34 dumps are the same.  32 are 60mm, 33 and 34 are 70mm....big difference in total flow.

The R33 ones I had in my hand a few months ago looked identical to my R32 type. I didn't take any measurements, but were certainly the same material. Perhaps late production cars were similar to R34 (?? - shrug).

Anyway the R34 dumps I have now are definately an improvement, no doubt about that.

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