I would be surprised if this were up and running by the Summer.

The wheel he got and is testing isn't even to the specs he wanted. He may need to ask for another, which would be the 4th. if it works as well as he says it will, i will look for a ported Manny/20G/Ported 02 and be that guy who makes 400WHP on pump and a flash, if Ii do that, it'll ruin most aftermarket turbo's as they will be Thousands more. I am not doubting the spoolup, it's a 20G, long in the tooth but big on it's power delivery plus it's Mistu and damn near OEM so your Evo will love it. I am doubting the spoolup, I wana see that 1st, stock or near stock spoolup, I will be sold.

BTW I have 350 WHP on pump on my 03 Evo (9.8CM exhaust) I bet a real efficent 20G would net me 400WHP on pump, another 150CFM's, **** yeah.

 

Forgive me if this is a stupid question, but what,if any effect would the turbo have on emmisions?

 

None, if anything it may make you car more efficent. IT WILL INCREASE GAS MILAGE provided you lay off the gas, hit the gas, well, you'll burn a LOT of fuel.... But generally a bigger turbo is WAY more efficient.

 

WOW, another quick question. I know you offer a ported Evo manifold for $95 (with exchange of a Core) but how would it flow compaired to say a $$$$$$ Tubular manifold? Just wondering Cuz I am thinking I would Run a Ported manifold and then a Helix 02 housing and then I would think that significant volume would have been added.


Any idea's on this? Anyone?

 

I am quite sure that a properly designed tubular manifold will outflow the stock cast piece. Although I have never been as impressed with a stock manifold as I am with the one on the EVO. Worste part about the manifold is the rust. That is going to be solved two ways. One as you guys know, we are offering ceramic coating on these, they can be seen on the site, very nice look. The other is still being kept under wraps until I have them in my hand. I honestly feel I have released too many ideas too early and am quite honestly getting worried they will be copied before I can even get them to market. This second one is a pretty kick ***, can anyone say carbon fiber?

The stock manifold, as I say, is really good. Ported it is even better, the difference in the stock ported manifold to a tubular header I would love to test in the future, the gains I don't think would justify worrrying about the header breaking over time.

David Buschur
www.buschurracing.com

 

I apologize if this was already asked...What kind of HP gains would you expect to see without cams? Any ideas?

 

This wheel should be good for a solid 50 whp over the stock EVO turbo, considering both turbos being maxed out. In other words the stock EVO turbo can make 400 whp maxed out, the 20G can make 450 maxed out.

David Buschur
www.buschurracing.com

 

So if i'm reading this right, this turbo is good for another 4-6 psi of boost over the stock 16g?

 

Stock turbo making 400whp with what accompanying parts? I never thought it was capeable of mare than 350-370 whp, max... That's great however...

 

Stage 4 with the EMS will get you there on race gas.

David Buschur
www.buschurracing.com

 

Misc CFM rates on different turbos:

Large 16G ----------- 550 CFM at 14.7 PSI
20G ------------------ 650 CFM at 14.7 PSI
GT-30 ---------------- 725 CFM at 14.7 PSI
GT-35R -------------- 820 CFM at 14.7 PSI

As taken from:
http://community.asiaosc.org/~zaliman/TurboSelector.htm

I dont know how relevant this is, but it's interesting info none the less

 

Ok, after finally reading through all 25 pages This turbo sounds amazing and it can't be beat in my mind. But now i've got some questions. I see that you've said you have ran this turbo on stock injectors and it was fine, but then you've recommended that it would be wise to have stage 4 before upgrading? I currently have the mods listed in my signature and I planned on getting IC piping, cams, and ill add injectors if needed. I've got enough money for the new 20G turbo and the 10.5 but here is the question, would it be wise to get the IC piping, cams, injectors before the turbo upgrade? Or could I get the turbo upgrade and then get the injectors, cams, IC piping afterwards? Either way I doubt i'll be disapointed in this upgrade. Also how much tunning is this going to need? I've got a custom tune by TurboTrix right now and I wanna try to pick up a utec and maybe do some tunning myself. I'll suscribe to this so I can keep checking back. Thanks.

 

The 20G turbo has been run on 550 cc injectors for years, that is the injector that comes stock in the EVO's. My old car ran 10.72 at 132 mph on 550's and a 20g and made 446 whp with those injectors. I am positive thinking back on it that the 550's were maxed out. Will they be O.K. for 99% of the guys that buy this turbo, I think so.

I do think that everything we have in our Stage 4 kit should be on an EVO before any turbo upgrade is done. Simply because the power you can produce from our Stage 4 kit will generally please most people and it is money well spent. You can argue with a whole bunch of 11 second EVO's running around with this kit on them.

Stage 3 only will leave you short the fuel pump and injectors. The pump you will need for sure, the injectors you can wait on.

As for tuning and such, buy whatever pleases you. My advise would be to wait for us to release it as we are going to do some custom flashes for this turbo combination and with the gains we have made in flashing this last weekend I can only tell you that you won't be disapointed with a flashed 20g.

David Buschur
www.buschurracing.com

 

mmmm compressor maps...






Terry S

 

Why pick a point way outside the efficiancy window of either turbo? On the same 2.0 pressure ratio line, if you follow along to the same efficancy line of 70% on both turbos you see an even bigger difference.... about 375 cfm for the 16G and about 595 on the 20G. Also note that the max efficancy line on the 16G is 71% and max on the 20G is 77%.

Later,

Keith