I'm selling a custom 2.5" downpipe (ac compatible)that replaces the stock 2" cast elbow from the Greddy 18g kit. DYNO PROVEN! As everyone knows, the cast elbow is extremely restrictive. Prior to the upgrade my b18c1 made 260whp @8psi. Four months later the greddy manifold develpoped a hole wich was causing a very noticable boost leak. I dynoed the upgraded 2.5" dp with the boost leak, not to mention the large increase in blow by it develpoed, and still made 280whp on the same dyno. There was a 20whp gain across the board. This is with no boost controller. Just the stock greddy 8psi accuator. I'm positive the results would have even been greater if it wasnt for the issues the motor was having. I'll post a pic of the graph as soon as possible.


Some info on the design: It uses one 2.5" tube to expel the exhaust from the turbine and a seperate 1.5" tube for the wastegate exhaust. Theres a divider that keeps the exhaust and wastegate seperate to delete any chance of turbulance. The dumptube then enters the exhaust about 20" after the turbo. The dp actually consists of two pieces, (the "elbow/outlet" and the downpipe that shoots under the oil pan). May need some minor exhaust work to match up to your existing exhaust (very minimal if any and would be quick and cheap).


Asking 250 shipped for both pieces






18g cast elbow replacement





downpipe/dumptube with flexpipe

 

Hey I just registered on here to get this from you. Me being new just email me at remspot1@yahoo.com to push this along. Thanks!

 

Just sent e-mail with contact info.

 

you still got this....and it looks like you need a adaptor too...

 

Still have it. Absolutely no adapter needed. Direct bolt on. PM sent.

 

I've been recieving a number of PM's asking if i still have the downpipe...

Yes, still for sale.

 

will the d/p that comes with the greddy kit bolt up to your housing. interested

 

is this still forsale

 

Downpipe is no longer available. Sorry