Hey guys, I need some help.
I have the below upgrades:
Buschur racing 3" turboback with cat coverter
SAFCII
MBC
Injen intake with upper intercooler piping kit
91 oct. and 94 degree weather, it dyno'd 321+awhp/323+awtq.

The tuner/tuner company is recommending my next step is to upgrade the fuel system. They recommend Walbro 255l/ph, Agency fuel rail and Greddy 720cc injectors. They said this should net me an extra 20awhp/awtq. Do you guys think this would be a pretty good route to go when I'm barely BPU? I know the fuel pump is recommended by many EVOm members but will it really benefit upgrading the fuel rail and injectors at this time or should I just upgrade the fuel pump and go with 272 int/exh cams. I'm really just shooting for about 350-360awhp/tq. Any help would be great!

Thanks,
Thai

 

I think what they are telling you is a little vauge. Just dropping these things in isn't going to net you the power gains you stated. Are you hitting fuel cut anywhere in the powerband? If so at what pressure? Your current power level doesn't even come close to needing 720cc/min injectors. They want to use large negative offsets via the S-AFCII to pick up some timing. This is where you'll net the power, however I think 20hp/tq is quite a bit optimistic.

 

Yeah, this sounds really sketchy.

 

I agree with Justin.

Also, a fuel rail? Unless you do car shows and need it as a dress up piece they they are trying to sell it to you as a pure profit piece of crap. The stock fuel rail has a huge flow capacity and many 400whp+ cars are running on the stock rail.

On California pee water gasoline I wouldn't want to gain much timing over the stock levels and that is what using larger injectors and an AFC will get you.

Later,

Keith

 

Well, they told me that my next upgrade should be the fuel upgrade. After the upgrade, they can retune. They said I should be pretty close to 350-360awhp/tq when tuned. I'm not hitting fuel cut anywhere in the rpm range. My car pulls hard all the way to redline. My 4th gear was pretty strong but after the dyno, 4th gears pulls just like 3rd gear and 5th gear feels like 4th gear. I'm pretty happy with my tune but I want to be pretty close to 350awhp/tq with the cat in place. I'm not all out for drag racing, I have a drag car for that reason. I just want a pretty beefy street EVO.
I just don't feel I need to upgrade the fuel rail or injectors but they recommended it. I just thought it was a little strange. Usually you need fuel rail and injectors when you upgrade the turbo (a big fat turbo). Do you guys think adding 264's or 272's cams with Walbr fuel pump net me pretty close to 350awhp?

 

Fuel pump yes... injectors for down the road, maybe... fuel rail... don't waste the money right now!

 

Anymore advices?

 

Get HKS cams and the fuel pump. Injectors aren't really needed. My stock injectors are supporting 360+ whp without getting maxed out.

 

Do the pump, and it's an easy install check evomoto.com. The rail is a waste of money and so are the injectors.

 

Get a new shop.

 

funny