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fuel system question

  • Thread starter Thread starter Night Shifter
  • Start date Start date Apr 30, 2010

Night Shifter

Well-Known Member
Dec 24, 2005
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59
Daytona
Apr 30, 2010
#1
  • Apr 30, 2010
  • #1
before i go get my car tuned i figured id ask about my fuel system with my cams..when i was FI i upgraded my fuel pump, injectors, and mass air meter.. when i went back to n/a with cams, i left the fuel pump in but wen back to stock mass air and 19# injectors..

will it be beneficial for me to up to an 86mm mass air and 24# injectors or will my 19's work just fine with my cams..if they work fine ill just go with a new mass air for the 19's and save myself money

will i be able to get more out of my tune with a bigger mass air or is my stocker gonna do me just fine? i just dont want this set up starving for fuel.. thanks guys
 

Night Shifter

Well-Known Member
Dec 24, 2005
1,710
27
59
Daytona
May 1, 2010
#2
  • May 1, 2010
  • #2
anyone?
 

sneaky98gt

10 Year Member
Apr 23, 2008
2,387
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114
NC State University
May 1, 2010
#3
  • May 1, 2010
  • #3
I don't know the exact answer, but I'm pretty sure there are folks here with cammed/bolt on PI GTs making upwards of 300 rwhp on the stock fuel system and MAF. But I think that is about the limit.
 
N

ninjastang125

New Member
Nov 1, 2008
591
2
0
maryland
May 1, 2010
#4
  • May 1, 2010
  • #4
Are you running cam only? What are you mods? Compression, ported heads.
 

SaleenGT2001

Well-Known Member
Jul 18, 2005
2,811
4
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Four Oaks NC
May 1, 2010
#5
  • May 1, 2010
  • #5
you wont see any gains on a MAF or larger injectors. the only reason you would replace either is if yours are maxed out
 

Night Shifter

Well-Known Member
Dec 24, 2005
1,710
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59
Daytona
May 1, 2010
#6
  • May 1, 2010
  • #6
ninjastang125 said:
Are you running cam only? What are you mods? Compression, ported heads.
Click to expand...

mods in sig...full bolt ons, full exhaust, aluminator block (10:1 compression), hitech II's, stage II ported heads(MPH),

SaleenGT2001 said:
you wont see any gains on a MAF or larger injectors. the only reason you would replace either is if yours are maxed out
Click to expand...

i didnt think id see any types of power gains i was just wondering how well cams and the injectors match up..

whats the hp rating for 19lbs when they start to max out?
 

Blackone51

Member
Oct 30, 2008
201
2
16
May 2, 2010
#7
  • May 2, 2010
  • #7
Night Shifter said:
mods in sig...full bolt ons, full exhaust, aluminator block (10:1 compression), hitech II's, stage II ported heads(MPH),



i didnt think id see any types of power gains i was just wondering how well cams and the injectors match up..

whats the hp rating for 19lbs when they start to max out?
Click to expand...

The chart I have only goes down to 24 lb injectors and they max out for N/A set-up at 346 and 288 for supercharged.
 

Night Shifter

Well-Known Member
Dec 24, 2005
1,710
27
59
Daytona
May 2, 2010
#8
  • May 2, 2010
  • #8
cool thanks..i should only be around 320 on a good good day so i guess ill just keep the stock stuff..thanks guys
 
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