Originally Posted by brando (Post 223945)

its a miss for sure. hes hitting fuel cut. DON'T RUN IT ANYMORE. you may need to advance the timing a bit. the car is leaning out not running too rich. if it were running rich they would be black and he would be puffin black smoke

Originally Posted by JET (Post 224017)

Ignore this guy. He isn't hitting fuel cut at 7 psi. You also have no idea if he is running lean or rich. His SAFC settings would indicate he is pretty rich.

Originally Posted by Super Bleeder!! (Post 224527)

Since when did afcs have sensors?

Originally Posted by FFPerformance (Post 224524)

I'd have to disagree with you... spark plug basics 101, reading spark plugs.....

If you pull them and they are wet and black, then you are most likely too rich (possible oil consumption as well)
If you pull them and they are dry and white, then you are most likely too lean (as the original poster stated)
If you pull them and they are a 'toast' or tan color, then you are in the right area for an appropriate afr.

I would double check the wideband sensorys you're usuing to tune the SAFC and make sure that they are in working order. Perhaps cross check the wideband with one from a dyno? I can see how the safc could have been adjusting fuel based on what it thought was a rich reading, and causing a lean condition if the sensors are going out.... sometimes leaded fuel accelerates them wearing out too...

good luck!

$.02

Originally Posted by JET (Post 224606)

If you knew about DSM's, you would know that .035" gap is WAY too big and causes issues just like what was stated. DSM's are picky on the plug gap.

Originally Posted by xveganxcowboyx (Post 224615)

To add to this, they are also very picky about plugs in general. Make sure they are the OEM plug and not some fancy platinums or anything stupid like that.

Originally Posted by xveganxcowboyx (Post 224615)

To add to this, they are also very picky about plugs in general. Make sure they are the OEM plug and not some fancy platinums or anything stupid like that.

Originally Posted by johnson (Post 232255)

i think i am having the same problem with my 1g...
ive done a boost leak test, new plugs, and after i replaced a bad injector, it was boosting great.... then i took it out again and was gonna get some gas, then it just stopped boosting after 2500 rpm..... i was wondering if its the turbo???? i checked the wastegate and it still opens but i could not control the amount of psi going in before it opened...

i might pick up some new wires later... thats what im hoping itd be....

Originally Posted by johnson (Post 232349)

it runs perfect before boost... but once it starts boosting it just sounds like a lot of backed up exhaust built up... and no boost reading or goin through... but once you get up on rpm.... it starts to read a little boost...

Originally Posted by johnson (Post 232720)

it still feels like it wants to go but it just cant... you feel power/ no power/ power/ no power... i think the turbo is still boosting, just not through the motor or somethin... beats me... i dont wanna replace turbo in a car i dont plan on keeping!!!

Originally Posted by Halon (Post 232762)

There, was that so hard? You need to provide as much info as possible when you're having others trying to diagnose your problem over the internet.

So with your wastegate unhooked, you're seeing a max boost of 7psi by 3.5k rpm's, and it never goes above that? Assuming your gauge is installed correctly and reading correctly, I'd say you either have a MAJOR boost leak, or the problem is pointing to your turbo/wastegate.