Tuner says to upgrade fuel system, help!
#1
Evolved Member
Thread Starter
iTrader: (8)
Join Date: Aug 2003
Location: Northglenn, CO.
Posts: 554
Likes: 0
Received 0 Likes
on
0 Posts
Tuner says to upgrade fuel system, help!
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 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
#2
Evolved Member
iTrader: (28)
Join Date: Jul 2003
Location: Cheyenne, WY
Posts: 1,176
Likes: 0
Received 0 Likes
on
0 Posts
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.
#4
Evolved Member
iTrader: (11)
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
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
#5
Evolved Member
Thread Starter
iTrader: (8)
Join Date: Aug 2003
Location: Northglenn, CO.
Posts: 554
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by JustDSM
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.
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?
Trending Topics
Thread
Thread Starter
Forum
Replies
Last Post
2010 Rallihead
09+ Ralliart Engine/Turbo/Drivetrain
23
Oct 15, 2010 11:43 AM
Stew
Evo Engine / Turbo / Drivetrain
46
May 11, 2006 07:56 PM