This car came out really well - we may be onto something here

This customer requested us to fabricate a custom 02 housing with the wastegate venting externally into a dump tube

I did not expect much gains - however the results were very impressive

We have no A - B test to compare a before and after as the customer did everything at once

The mods were Buschur Stage III - with some other parts mixed in - see dyno sheet for details

JUST WANTED To note that I never saw the Buschur JDM style exhuast with V band before - its a very slick unit and very different - the muffler goes where the cat is

93 octane with alcky 27 psi

The neat thing about it is the fire ***** which shoot out due to the alchy

The car ran really well on the road - on the dyno its so sensitive you can see the oscilation from the AEM boost controller as its hunting to hold the boost but on the road it just pulls hard and smooth

For those interested The Shop will be making up a batch of these - we are ordering flanges etc as it came out so good we are sure that others will want one

Al

















Video of adyno pull and fireball

 

WOW!!! Very cool! Thanks for posting this, Al. Shows what kind of power good tuning can make

 

why does one pic show MAF+forge bov and another show AEM+Tial bov

 

both cars run maf no aem on either car and the one with the forge is not the car on the dyno al posted it by mistake

 

Prob my error - will fix it now !

I was actually posting pics of another case study - a car with a 20 g - more on that later - I fixed it

 

Al, the title is a bit misleading. EWG means external wastegate. He doesnt have an external wastegate. Its merely a dumptube.

I did this last year on my car. JM Fabrications did the welding.



The sound alone is worth it. Let alone the gains. I did not do a before and after dyno, however my butt dyno seems to be very accurate and it definitely felt better!

 

I WANT THAT WASTE GATE SETUP!!!!

Thats hella impressive especially on a Dyno Dynamics!!!

 

i want one, let me know when they come out

 

I agree - you are 100% correct - external dump ! STock WG!

Thanks !

 

very interesting. what is the whole purpose of doing and external dump ? beside the sound lol.

 

In theory - it has two advantages

1 - It in effect makes the exhuast work like a larger one - by opening a seperate passage it gives less back pressure

(interestingly when we tried to run higher boost - thus closing the gate - the car actually lost power. To find peak power we needed to find the sweet spot. The lower your boost - (more flow through flapper) - the more the dump tube is helping)

2 - It helps the reduce turbulence by keeping the flow seperate

It remains to be seen what kind of gains we see in A - B testing

All I can say at this point is that this is prob the most power I have seen out of any stock turbo on our dyno to date

Al

 

Interesting! I also think so with only 27psi on alky! some people are hitting 400whp on the stock 9 turbo on c-16. Hmmm...

 

Keep us posted on ETA and get some pics up when you can...

 

So this is basically what everyone in the dsm world has been doing for years. An atmospherically dumped O2 housing...

 

Nice job Al. I wish I had been able to stay longer (I had the black Evo VIII) to watch the tune, but I had to head back home. Can't wait to see this thing in action tomorrow when I get out of work. He told me it pulls crazy on the road.

-Andrew

P.S. Dan, why was I told 380? Shady Motorworks in the house lol