dumptubes: re-routing vs. open
 

personally i like the re-routing. it is harder to fabricate in most cases, but i guess it is just the environmentalist in me. :-\

i didn't do all the fab work in these pics. the first set all i did was the dump tube. the second setup i just did the downpipe. both ram horns are well made, but neither is backpurged and the second one does not have any welding on the inside of the flanges where the runners meet the head and the collector meets the turbo flange. i would recommend adding that atleast if you build your own manifold. i don't think it is necassary to backpurge in most cases and obviously these two manifold fabricators feel the same. i do however back purge my downpipes since the material is thinner and in most cases you do get full penatration.

open dump tube:
http://i47.photobucket.com/albums/f1...h/DSC07604.jpg
http://i47.photobucket.com/albums/f1...h/DSC07602.jpg

why the manifold placed the wg over towards the driver's side i was told it was originally going in a civic and that was the only way the manifold builder could make it fit, but then they decided to put the setup in an integra and didn't want me to cut off the wg elbow for fear it would void the warranty on the manifold. :P

this setup i did just the downpipe but i had to modify the manifold from having a 38mm wg straight out front to having an elbow for the synapse wg because the owner was afraid it might hit the upper rad support. obviously he wasn't concerned about a manifold warranty, or maybe it doesn't come with one. it would probably have been easier to run the dump tube straight out the front, but i decided to run the dump tube behind the downpipe to save space out front and to help keep a clean looking setup.
http://i47.photobucket.com/albums/f1...h/DSC07634.jpg
http://i47.photobucket.com/albums/f1...h/DSC07633.jpg
http://i47.photobucket.com/albums/f1...h/DSC07637.jpg
http://i47.photobucket.com/albums/f1...h/DSC07635.jpg

Re: dumptubes: re-routing vs. open
 

nice

Re: dumptubes: re-routing vs. open
 

if I didn't already have a ramhorn manifold, you would be getting an email from me about my setup. damn those are nice! I had to modify my radiator to clear my wastegate by chopping off 1" off each side and have it rewelded, those setups looks like they are perfect for my car.

nice and sexy.

Re: dumptubes: re-routing vs. open
 

sweeeeeeeeeeeet :6

Re: dumptubes: re-routing vs. open
 

First set up is mine 8) . I wasnt interested in re-routing it since the car the set up is going on only gets driven about 2000-4000km at the most every year. And if you are wondering why I wanted it the dump tube so far away its right here http://forums.evans-tuning.com/viewtopic.php?t=2874

BTW if anyone needs work done Aaron is a great guy to deal with. He is very polite, easy to get along with and helpful. An all around nice guy. I would deffinalty recommend him if you ever need any sort of work done and at a very reasonable price. Thanks again!

Re: dumptubes: re-routing vs. open
 

don't lie matt, you know that car is going to get raped for more than 10k a year with two people driving it and racing it! :P

Re: dumptubes: re-routing vs. open
 

I hope to God it will! Im just going on how much it was driven last year. If all goes well it should get the piss driven out of it >:D.

Re: dumptubes: re-routing vs. open
 

haha
2nd one is mine ;D
im a fan of the re-route, for a few reasons
Ill also vouch for Aaron any day
Gino hit me up with a PM, just wondering more about your setup

Re: dumptubes: re-routing vs. open
 

i think it would be an interesting race between these two setups. i'm sure you guys will probably run into each other at a cscs event.

Re: dumptubes: re-routing vs. open
 

Brian, are you going to bring that new setup of yours down to the Maritimes this summer for a race event?

Re: dumptubes: re-routing vs. open
 

might drive down for the PEI races if i get the time off and the cars all together.
Id like to get it to JD racing & put it on the dyno

Re: dumptubes: re-routing vs. open
 

Not sure of his setup but it looks like a gt35r so he could spool faster than my sc61 and also im not shooting for high hp this year just going to keep it around 300 and next season upgrade clutch/LSD/IM/cams and headwork. but after that the car should run good

Re: dumptubes: re-routing vs. open
 

That would be cool. I'd love to see your new setup in person. The PEI races should be interesting this year. There are an unreal amount of turbo cars around this year.

Re: dumptubes: re-routing vs. open
 

Same with me. I'm only shooting for 300's for now too. Funds are running a little low now, and I don't think i'll have the built motor ready in time. I'm just going to compete for a few CSCS events for fun. If I'm lucky i'll qualify and maybe win a round hahaha.

Whats car you running?

Re: dumptubes: re-routing vs. open
 

How's that synapse wastegate working out?

Re: dumptubes: re-routing vs. open
 

Still gotta get the charge piping fabbed and need a few other little things, should be running by the end of the month

Re: dumptubes: re-routing vs. open
 

Just an update went out tonite for some street tuning and the gate works mint
using ports c&d the manual said ~4.5psi i seen it go to ~5.3psi but some of that might be creep as im using the smallest valve seat with a recirulated exh system and a an sc61. pulls pretty strong for only ~5psi

Re: dumptubes: re-routing vs. open
 

^^^ what that synapse w/g run yah i have talked to a few shop and they cant get them.....so for the thread jack

Re: dumptubes: re-routing vs. open
 

i heard the re-circulating dump makes the exhaust sound like a jet when the gate opens.... is this true?

Re: dumptubes: re-routing vs. open
 

Nice work, looks to be a beast in the making!

Re: dumptubes: re-routing vs. open
 

I remember reading something from Evan's site about why you should rerout the dumptube, behind the downpipe, but I can't remember why and totally lost the link....damn it. It's a lot of modding, but just to keep the heat of the exhaust fumes away from the motor, I would reweld into into the end of the DP

Re: dumptubes: re-routing vs. open
 

just dump it :6 great fab work btw

Re: dumptubes: re-routing vs. open
 

http://forums.evans-tuning.com/viewtopic.php?t=2874

;D

Re: dumptubes: re-routing vs. open
 

weir you never seem to disappoint me :)

Re: dumptubes: re-routing vs. open
 

wow thumbs up ;D

Re: dumptubes: re-routing vs. open
 

one thing about an open w/g dump is getting accurate AFR's after the w/g opens, unless the o2 sensor is in the manifold, but if i remember right its supposed to be post turbo right?

Re: dumptubes: re-routing vs. open
 

Why would the A/F ratio change when the waste gate opens?? Yes post turbo

Re: dumptubes: re-routing vs. open
 

i think he means if the wideband is located after the dump tube which would make the exhaust a/f fluxuate being sourced pre turbo, if this makes sense

Re: dumptubes: re-routing vs. open
 

sweet manis!

Re: dumptubes: re-routing vs. open
 

gen4acclude got my point. i dyno'd my car with an open dump, and i was lean in boost after the w/g opend. so i retuned and the car ran like ----. i put it back to the basemap, after my last pull and i made best power, so i kept it there and babyed it back home. so than i made up a tempory dp with the wg rerouted into the exhuast and i was in the 11's @ wot when the dyno wbo2 was shoing mid 13's. basically i had a good tune, but my afrs were thrown off because the dyno wbo2 didnt see the exhuast from the open w/g

Re: dumptubes: re-routing vs. open
 

maybe I am missing some part of this but correct me if I am wrong: can't you just take the dump tube and send it into the downpipe into the exhaust?

Re: dumptubes: re-routing vs. open
 

yes, but you want the wideband 10-12 inches form dp flange at turbo and before the recirculated dump tube

Re: dumptubes: re-routing vs. open
 

why would you want the dumptube located after the wideband? don't you want the wideband to read the dumptube exhaust? what about the narrowband sensor? don't you want that one to read the DP gases also?

i confused. ???

Re: dumptubes: re-routing vs. open
 

cause it makes the af ratios fluctuate, it already read the gasses coming out of the turbo the wg opens and reroutes the same gasses

Re: dumptubes: re-routing vs. open
 

i was told if you dont put flex on the wg dump re-route tube its a bitch trying to get it back on after you take it off once because of warping and expansion, which makes sense, how come i never see it done? false info?

Re: dumptubes: re-routing vs. open
 

as long as you don't take it off when it is extremely hot and give it time to cool down it should stay in the shape it cools in. same deal for manifold head flanges... in most cases they warp a bit after being welded up... tighten the header bolts while it is hot, after you heat cycle it the first few times and when you go to take it off a few years later it will be flat as glass.

Re: dumptubes: re-routing vs. open
 

gases coming out of the dumptube aren't thet same gases coming out of the turbo. of course it's going to make the af ratios fluctuate if you dump it before the sensors. that's what you want. more accurate 02 sensor readings. tune it to compensate for it. you want the o2 sensors to see those gases that would otherwise be dumped out.

most stock turbo cars use internal wastegates, and they dump out before the sensors.

Re: dumptubes: re-routing vs. open
 

anyone else wanna give some input?

Re: dumptubes: re-routing vs. open
 

i want one..............

Re: dumptubes: re-routing vs. open
 

re-routing or not re-routing is just personal preference. unless you have exhaust leaks, the gasses coming from the turbo are the same as the ones coming from the wastegate. how else would cars be able to be tuned with open dumps?