Unless a 35R is a small turbo setup.........

 

ill be running a 4088r.

 

https://www.evolutionm.net/forums/4988279-post2.html

 

Your kidding right.

 

sherlock holmes is alive

 

I do agree that if recirced poorly you may loose some power vs being direct dumped. This is usually due to the angling/routing of the tube back to the downpipe.

The smoother that flow is the less issue. Your sticking what looks like a damn tractor muffler on the end of your dump tube and your telling me thats not restricting the flow at all. Come on man

Oh but I forgot I don't know anything about turbos

 

totally different, dumping it in with the exhaust coming out of the turbine and trying to cram all the extra volume in the same piping and muffler will hurt it a lot more than a slight restriction on the wastegate end. if the muffler was restrictive then there would be boost creep or a spike. at minimum the logs would look different or the boost values would change. they didnt. say 50hp worth of exhaust is coming out of the wastegate, would you rather have that running thru its own muffler or thru the catback which is already being overtaxed with 600hp worth of exhaust?

 

Adding a muffler to external dump is a great idea. But certainly not a new one. I was servicing porsches in the early eighties and the first turbo porsches( 1976 )came this way. they used straight through 1.5 mufflers about 8 inches long. very effective.

people who say you are defeating the purpose of external dump dont know what they are talking about. they spout off with no data to back it up. a properly sized muffler will work very well to serve the purpose without sacrificing power.

 

data to support?

someone get us some dyno sheets

 

i heard about porsche doing that. sounds like they had mini catalytic converters on the wastegates.

 

Set up like this I can see getting best of both worlds agreed 100% . However the muffler from the OP is no staight through design.

But data talks and no one would ever go through the hassle to test open dump, with OP's muffler, and then recirced it so.......

 

Dynoflash has tested the theory of power loss with the dump recirculated and his said the loss was no greater than 10hp and this was on a 500hp car. So I say recirculate if you can. The noise is cool but evo's get enough looks without the noise. Also I call bs on the logs being the same with that muffler on there. That is easily costing you some power wether you cab see it in your logs or not.

 

I honestly dont see the reasoning.. You say its to muffle sound, but not affect power.. too much???.. well open WG = loud and gives the best open waste port for your turbo.. If you want to muffle it, then just put on a standard recirc and be done with it.. or like said earlier, just angle the sucker so its as efficient as poosible and connect back with downpipe. It seems like this is a case of arguing for the sake to argue..

 

yea i think that thing is ridicules why get a dump if you dont like the sound

 

I would love for a well respected tuner to chime in and tell me that recirculating it wont cost more than 10-15whp on a 700whp car with your average street exhaust on it. I just dont see that happening though.