http://www.diamondstarmotorsport.com/br440.shtml

Results from trip to Atco Dragstrip in NJ with the BR440 turbo kit installed on our shop evo. MPH gains were about what we expected. The car should be capable of high 11's on pumpgas and mid 11's on 112 as is with normal traction.

Remember, the car is still running stock camshafts, intercooler, upper ic pipe, injectors. We are going to install the hks 272 cams next and retest.

The stock DSM 1g bov might be leaking at 24psi, as we see a few psi of boost drop. Going to change to a Tial bov and change the MBC boost referance from the comp housing to the intake manifold to see if that helps steady the boost control.

With the stock IC we are seeing about 15-20* lower intake temperatures between the stock turbo and the BR440 at the same boost level on about the same ambient temp with the stock FMIC.

 

its about time i see some BR440 news LOL. I wish the Br440 was a tad cheaper . Definately a good way to upgrade without going crazy and breaking stuff.

 

Yeah traction was horrible out there today. i was sideways out of the box and went 12.4@113. i will post videos of the day soon...

 

pretty good times, cant wait to see what else you can make.

 

Nate, keep up the good work. You're findings are definately interesting. I look forward to each new development.

 

what intercooler are people running with the br440 and br 500? also would your recommend upgrading valve springs and retainers and head studs after the cams? im pretty interested in having the br500 as a next mod. maybe intercooler first.

 

Good to know that this sort of peformance is possible without risking a failure at the emissions station (i.e., stock cams).

 

We are running the stock intercooler right now with the BR440. Still have no data on what the gains of a larger fmic core would be with this turbocharger.

The HKS cams can be used with the complete stock valvetrain with no problems.

ARP heastuds have nothing to do with cams or valvetrain. The studs will keep your headgasket seal stronger than the stock head bolts. This might be an issue in 500hp+, but headgasket failure is extremely rare so far with Evo8's.

 

Nice runs, I am pretty darn impressed that the turbo is doing that well with so many stock parts still on the car.

I see you guys running in the mid 120's without a problem once the cams, intercooler and other parts are installed.

Nice job.

David Buschur
www.buschurracing.com

 

Im actually a little embarrased by the ET's from yesterday. That was probobly the absolute worst ET for MPH day ever for me in an AWD car.

That's exactly the plan. That 118.8 mph run was also made with a"guess" tuneup.I looked at my old racegas maps on the stock turbo and compared how much timing I could add. Given another 2 or 3 runs it might have run 120mph with just tuning and more boost since it was only at 24psi.

I think the cams should add a good 2-3mph alone.

I can see us getting into the really really low 11's with this turbo in the spring once there is traction and stages 1-4 done.

 

honestly...I hadn't even thought about emmissions testing issues with the cams before, but that is a good point. right now all we would have to do is put the stock MAF and ECU on the car and install a catalytic converter and the car would pass emmssions and inspection with no trouble at all.

We haven't installed the camshafts yet becuase of backorder isssues. We had a whole stack of Evo 272 intake cams come in about a month ago...and sat around for a while. by the time the 272 exhasut cams came off backorder, we had already gotten rid of the 272 intake cams.

now we have a couple ech 272 cams and no intakes. Can't win.

 

would another aftermarket intake manifold work with the br440? im tempted to go for the br440 or 500 and run stock fmic.

 

The turbo upgrade will make a solid 30-40hp over the stock turbo with the mods you have now. that's worth doing.

I would do the FMIC before the intake manifold though for a few reasons. #1 being that I don't know of anyone using a sheetmetal intake manifold with the stock ecu. you may have issues there. #2 my gut feeling is that the fmic is worth some significant power with the larger turbo at higher boost levels and would probobly show bigger gains than the intake manifold for about the same cost.

 

aww i meant exhaust manifold not intake manifold. cuz there selling a pretty sweet looking exhaust manifold on evo8.com for about $290. and it looks a lot better than the one that comes with the br kits.

 

In my experience with dsm's the exhaust manifold is not really that important. I have seen alot of DSM guys ditch the stock cast manifold for a SS tubular header and gain nothing.
I would put that $290 twards the fmic upgrade, rather than replacing a good part of the BR kit.