Boss Intake or Fuel Delivery Problem......

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04-03-2012, 07:36 PM

#21

FlyboyMustang

2nd Gear Member

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Join Date: May 2010

Location: The State

Posts: 217

Quote:

Originally Posted by ShaneM

the boss intake cuts 10 ft-lb from the gt down low, that would not make the car bog from torque loss. you have something else going on. does it idle erratically? my buddy installed the boss intake and one of the little o-rings around one injector stuck to the factory intake, it took three mechanics before they noticed that little o-ring was gone. the car ran like crap until they replaced it. since you said it does it on two tunes, it cant be the tune. its easy enough to check if you have a vac leak, we did it with some TB cleaner iirc on my friends car, spray until the idle changes and you can find the culprit.

you absolutely need a specific tune for the boss intake, you cant go back and forth from it to stock. the stock tune especially would cause the car to run lean with the boss intake and could damage the motor. if you ran the stock tune for a long time with that boss intake, perhaps you fouled a plug from being rich?

It does idle pretty rough, i never thought of the oring thing, ill go check the stock intake to see if there is an oring missing on it.

thanks for the input!!!

04-13-2012, 08:02 AM

#22

FlyboyMustang

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Join Date: May 2010

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Posts: 217

Well I took the boss intake off and ran a 12.3 @ 115 with a 1.7 60'......def liking the feel of the car without the boss. My clutch pedal is a little sticky coming back up though...any input?

04-13-2012, 08:34 AM

#23

ShaneM

5th Gear Member

Join Date: Jun 2009

Location: Texas

Posts: 2,397

Quote:

Originally Posted by FlyboyMustang

Well I took the boss intake off and ran a 12.3 @ 115 with a 1.7 60'......def liking the feel of the car without the boss. My clutch pedal is a little sticky coming back up though...any input?

ford says forums cause that sticky clutch problem.

04-13-2012, 08:44 AM

#24

FlyboyMustang

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Join Date: May 2010

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Posts: 217

Quote:

Originally Posted by ShaneM

ford says forums cause that sticky clutch problem.

hmmmmmmmmm makes sense.......

04-13-2012, 09:11 AM

#25

ShaneM

5th Gear Member

Join Date: Jun 2009

Location: Texas

Posts: 2,397

Quote:

Originally Posted by FlyboyMustang

hmmmmmmmmm makes sense.......

lol, seriously though after the investigation into the trans issues with 5.0's, that was one of the things ford blamed. i have the clutch sticking issue at high rpm and i know multiple other boss owners that do too. same tranny so having the issue on a Gt woudl make sense. mine is only at redline on the 3-4 shift. i just dont hit redline, shifting at 7k or so rather than 7.5 seems to do the trick for me.