Split Front / Dump Pipe

[URAS_33]

I am chasing a split front / dump pipe for a 33 GTS-t , which i have found a few but don't know which one to go for or what to look for when it come's to these.

The 3 that i have found are:

BOS Importing - $420 http://bosimporting.com.au/components/com_...d98e35fd871.jpg

AM Performance (ebay) - $360

http://cgi.ebay.com.au/ws/eBayISAPI.dll?Vi...bayphotohosting

Just Jap - $269

http://www.justjap.com/parts/new/exhaust/jjrsplitdumprb.jpg

I'm sorts leaning towars the AM or BOS one's as i have heard some not so nice stories about the Just Jap one.

Opinions and info would be great.

Same situation with hiflow cats as well.

[paulr33]

the bos importing one is good, very popular among the skyline owners

[Cubes]

I don't like the wastegate merge point on the JJ or AM ones.

Bos importing looks fine. The CES dump pipe is also good BUT has a poor placement of the o2 sensor as the o2 sensors must be positioned upright.

[Andyn]

im interested on this too. Especially feedback on the Just Jap ones.

Its nearly half the price of the bos ones, and i really dont think there would be much diff in performance. Possibly better material, but the jj ones should last for years. I could be wrong...

[JustinP]

I have the BOS Importing one. I think the design is very good. The construction (ie some of the welding / finishing) of it leaves a bit to be desired though, but nothing that would affect performance adversely.

[limpus]

The wastegate flap on my hks2535 seems to be fouling against my BOS importing dump...although it worked fine on my stock turbo...

[sam5709]

i was in the same position not too long ago, after reading a few comments i decided to go with the BOS importing one, as i didnt have enough money to get it professionally installed i decided to give it a go my self, everything lined up 100% with no problems at all , the overall construction/welds on the split dump pipe was awsum and made a huge difference to my car, best mod iv bought yet

[markimak]

what are people using for R34 GTT? JJ dnt have anythign for GTT

[JustinP]

what are people using for R34 GTT? JJ dnt have anythign for GTT

I have an R34 (4 door) and use the BOS Importing one. The same one fits the 2 door GTT as well.

[nsm034]

got the split batmbl one also on my 34 . Also got the 5' cat. Made a huge difference. The only welding issue i had with mine was in the inside of the top, just a bit daggy. Nothing a file couldn't fix

[Blitz]

I bought one of the JJR Stainless version for my R32 and the quality of the finish and welding is excellent.

Just Jap also guarantees the fit and warrants the product for 12 months.

Compared to the quality of the BOS versions that people posted in the thread recently, the JJR ones are MUCH better.

Check this thread for a good snapshot into peoples experiences with both the JJR and the BOS version

http://www.skylinesaustralia.com/forums/in...howtopic=157267

My 2 cents.

[WazR32GTSt]

justjap is an excellent company with great customer support. i haven't tried their dump pipes before so can't comment on their quality

i can vouch for the bos/batmbl dump pipes though - excellent upgrade

[gt-t_r34]

the bos one seems to be good im happy with mine no problems with the stainles either

[cerci]

well

i brought the bos split dumpy, and i had 2 get my turbo heat sheild cut away, and still the o2 sensor was leanin up aginst somthin and gettin very hot

not a direct fit

so unless he has changed hes design i wouldnt recomend them

few mates have the same prob also

[leetom]

I don't like the wastegate merge point on the JJ or AM ones.

Bos importing looks fine. The CES dump pipe is also good BUT has a poor placement of the o2 sensor as the o2 sensors must be positioned upright.

been running full ces system for 2 years & had no dramas[good performance gains]

[siddr20]

Quailty of the bos import one is excellent.. Top quailty!!

Just i hate how the wastegate pipe goes over.. aargh!! touches everything damn it..

[Cubes]

been running full ces system for 2 years & had no dramas[good performance gains]

The CES is a top quality design according to their pics on the web site.

Does yours have the o2 sensor mounted upside down?

Apparently its a big no no for o2 sensors as water sits in them when upside down. I can't remember the exact specs but its supposed to be something like no more than 25-30degree's angle from upright.

Any fuel consumption problems? Getting more than 12-13L/100km's?

[nizmo_freek]

Sorry to high-jack your thread uras 33.

Is anyone using the 3" bellmouth style dump/front pipe from UAS?? if so what are your opinions on it, i am thinking of getting one very soon.

http://uniqueautosports.com/

[J_Red33]

Definantely DONT go the CES. The wastegate pipe isn't even mandrel bent, it's crush bent. Looks all nice & shiny, but an engineering cockup from start to finish with the O2 sensor issue.

From memory, Bosch specifies that the sensor should be mounted above horizontal so that the section of piping it's on does not collect/drain water.

I do actually have a BOS dump, but got screwed over when he changed supplier. I had my cat back system custom made to fit on the dump I got from him only to have that crack. He sent me a replacement, but didn't fit the same & the exhaust sat twisted & at a different angle (not a good look with twin pipe). I've had a dodgy job done to get the new one to fit to my cat back. When I did some checks it turned out that the first dump had been set up wrong when compared to the original & the new one was correct. So I've spent $1400 on a stainless steel cat back exhaust system only to have to spend more money on it to make it fit right. Money I shouldn't have to spend, but since I sent the first one back I've heard shit. Before that he was talking about helping me out. Very pissed off.

I can say that the new type one does make good power (as you have seen before cubes), but I'm a bit wary of the quality of fitment.

Edited March 9, 2007 by JazzaR33

[WazR32GTSt]

as far as bellmouth goes..

if you're dishing out to put a dump pipe in, its wel worth paying that little bit extra for the split style. based on my experiences anyway.