Hey, a reasonable post Al- I am completely speechless keep em coming and share more info that is actually useful

 

hey ricardon, did you get to ride in MMLVMM's car? How laggy is it? is it a good compromise for the street?

 

I've driven it in several stages of the initial tune. Twice on the street and once at the track. It's laggy alright, compared to stock, but you'd expect that from such a large turbo. But as MMLVMM said, it's VERY far from being done!!

 

Quick question about the dyno plot on the first page. Shouldn't the Torque and HP cross at 5250 RPM? To me it looks like they cross much lower.

 

the graph is accurate... it is also an early stage of tune.

 

I know some dyno operators only do SAE correction of HP but no correction on Torque, is that the case in your graphs? That is the ONLY time you will not have HP and Torque cross at 5252 RPM no matter what your state of tune.

Keith

<edit> I'm retarded! The only OTHER time they don't cross at 5252 is when you use a different scale for HP than you do for Torque as you did on your graph.

 

it is confusing actually

 

I was looking at the place you bought your turbo setup from and had some questions, does the stock O2 housing bolt up to that turbo? Just wondering why they have an option for 3" downpipe or no downpipe. Also, do you know what the difference is between the 450 HP setup and the 550 HP setup?

Thanks,

Keith

 

500 earlier spoolup on the turbo and get the avo downpipe it is made for the turbo. extra dinero but its worth it. Don't bother with the 550 unless you are serious on your upgrade path... It is an awesome turbo though...

 

yes on the o2 btw

 

Reason I ask is because I already have a full 3" system including downpipe. If the stock O2 housing bolts up I can use the 3" downpipe I already have.

Are you saying that the 450 HP setup spools 500 RPM sooner than the 550 HP setup?

Thanks,

Keith

PS: I am asking all this because I am trying to decide between your setup, the SFP setup, or the Buschur Racing setup

 

Yes on the spoolup. You should be able to run 25-26 pounds of boost with small turbo. Keep in mind it flows a lot more cfm at a given boost level than th stock. These are really big monsters and need to be tuned and have supporting mods to get the bang for the buck. You get a lot more than 550 actually with a properly build motor with the larger one. Regarding the downpipe, just weld a new flange for the new turbo.

it is a different configuration than stock. Call Roshon next week for info. They are setting up a new shop and have to move the dyno etc this week.

Mark

 

About what RPM do you hit 20 psi with each of them? Regarding the down pipe, I thought you said these turbo's worked with the stock O2 sensor housing? If they do, then my downpipe would bolt right up with no problem.... now I am confused.

Keith

 

On the boost, around 4000 for the gt40 450 and around 4500 normally on the bigger one. I have it down to 4100 though through initial tuning... You will need a new downpipe... just get the one being offered or call Roshon at brainstorm to ask if you could adapt yours...

 

after speaking with AVO I came to find out that the 550hp turbo is actually NOT a GT40. Its a GT30-hotside/Gt40-coldside. They choose to call it a GT40 for advertisement purposes. To be honest I dont know how that turbo flows that much. The picture you show looks like the inlet is way smaller than the HKS Gt3037. I have seen a GT35 and its way bigger, about 4 inch inlet. Correct me if im wrong but the inlet just looks small