Who knows what dump pipe this is??

[GTRSOAR]

Hey everyone, im looking onto buying these GTR dump pipes and I was wondering if anyone knew what brand they were. Are the descent quality? Has anyone used these before? Thanks

[Supraclean]

This is in the Gtst section, but if you ask me they look like any regular ebay style dumps to me.

[Skym]

HKS make similar looking dump / outlet pipes.

You want a bellmouth type of dump / outlet pipes from HPI (High Power Improvement) or similar manufacturer (Nismo, etc).

HPI dump / outlet pipes -

http://www.hpi.co.jp/products.html?cate=1&item=4

Cost, diameter, etc -

http://www.hpi.co.jp/products_zoom.html?cate=1&item=4&zoom=1&format=4

They aren't cheap, but you pay $$$ for good quality parts.

You'll probably need a website translator to read it if browser doesn't automatically translate website.

[Daryl @ RightDrive]

HKS is one of the only companies that make dump pipes what look like that. Hard to tell from that pic though if they are authentic.

[Super_Dude]

His and ebay. Even if they are hks that design has been proven less efficient than the tomei style. Quality will be fine from hks, not good if ebay item.

[GTRSOAR]

Does anyone have a picture I the eBay equivalent? Any way to tell if it's fake or not? Thanks for the help

[Skym]

The single bellmouth dump / outlet pipes are bigger with diameter which is what you need. The twin pipes run a small diameter main pipe (similar diameter to stock dumppipe), with smaller pipe for wastegate that's aimed at wrong angle into main pipe.

Here's a Japanese tuners opinion on those types of dump pipes and what he recommends from his experience -

http://sthitec.blogspot.com/2009/10/twin-turbo-extention.html

[BongRips]

Is he saying that even with boost set on just actuator pressure or 0.5 bar that it creeped to 1.3 regardless? Could that be why my boost goes to ~8psi which I believe is the actuator pressure for the turbo I have, and then at higher rpm it creeps to around 14+