engine sputter...

[Yoshi]

Ok sooooo my friend and i just installed a Boost Gauge in his 98 A/T Spyder GS-T, and we took it out for a test drive and it was running fine, when the plastic hose going to the gauge poped off. soo we pulled over and popped the hood and reconnected the hose, and now when he punches the gas the car starts to sputter and sounds like a machine gun firing. It starts when he punches the gas and hits about 3000RPM the car is still drivable but it only happens when trys to build boost rapidly. i called one of my friends and he said its because of the weather... its 35*F here where we are but that seems unlikly to be the problem... the car has some mods on it but nuthing to extreme heres a list of the mods.

- 3 inch turboback exhast (no cat)
- ebay knock off Turbo XS B.O.V. that was made for a Turbo Bettle... (it was free...)
- Boost Gauge

PLEASE HELP!

THX

 

[2muchboost4you]

fuel cut? how much boost? I don't think 35*F is cold enough to see any kind of air/fuel issues, you car was tuned from the factory at 70 to 75* F. I do see that you live in Texas and your summers probably reach in the 100s* F, unless you have had the car re-tuned for the mods in the Texas heat, ambient air temp should not be an issue

also how did you install the gauge? did you tee into the vacuum line off the intake manifold?

 

[zilo900]

if you T'd into the fuel pressure regulator, you may have had one of those lines come off too. Do a check of all the vacuum lines to see that they are all connected