Dyno Proof!

[Bass Junky]

You must be careful with the ones from E-bay.

They WILL NOT fit a Series II R33 or an R34 GTT.

WILL NOT FIT. The dum pipe length is different on these models.

Also, the BOS Importing BATMBL ones are AWESOME. You should buy one of those. I'm as happy a Larry with mine and the quality is tops.

BASS OUT

[MANWHOR3]

The ebay link and the Manwhore link.

They are the same dump. 2.5"

The batmbl dumps are good, basically the same as the ces.

But still for $130 thats stuff all.

<{POST_SNAPBACK}>

I definitely agree that the batmbl dumps are pretty good. They are however very expensive @450.

like you said, 130 is stuff all for a split dump. I don't really see the fact that it's 2.5 " as being a problem up to the limits of the stock turbo.

[thommo]

you will get what you pay for.

450 will get you an excellent quality 3" dump, with minimal restriction.

130 will get you a cheap 2.5" dump - quality? performance? fitment? who knows. its a $130 gamble i wouldn't take...

[Race__24]

There was a group buy on here a while ago for the C.E.S. item, picked mine up from that, only cost me around $650 I THINK, that was with special coating same as the pic posted earlier.

If there is enough interest you should look into doing another.

[theexile]

Interesting read....

Just bought my SII-R33 and it has a 4" exhaust from the CAT-back. I want to get the 3" piping from the turbo to the CAT.

I was just wondering if it is worth spending $1000-$3000 the get an 3" full system for the 10-20rwkw gain?

Looking at the graph I notice that the power gain is like 10kw from ~3750rpm - ~4750rpm and 20rwkw from 5500rpm to redline. Do you guys really take your skyline to ~6000rpm in every gear to get the power gain, cause I don't think I'll be driving like this every weekend.

My friend told me that my 4" CAT-back is not necessary as my engine is stock and that the 4" does not have good back-pressure. Can anyone shed some light on this. Thanks.

[BHDave]

Keep the 4inch cat back. Your mate has no idea what he's talking about. On a turbo engine (actually any engine) you want the least back pressure possible from a performance point of view. Even in a NA engine the scavenging effect is due to the runner length of the headers and collector design, not the backpressure in the exhaust.

The only reason the get rid of your current cat back is if it is too loud/drony for you to take in day to day driving.

Anyway, you don't need to spend 1-3k as you already have the exhaust. A one piece front/dump pipe and a decent cat (say 3 inch minimum) is all you need to get/replace. Thats well under a grand.

[The Mafia]

thats about $300 actually.

Save the rest of the cash and get a front mount, and powerfc, and tune.

Theres a nice 200rwkw