DTC po174-171 vacum leak?

[gils maui pony]

since I've installed the sct tuner, in stock mode, the computer threw me a po194-191 [too lean] and bogs now and then up to 3k's.....

I talked with Matt at BAMA this morning and he suggested to check the hose from the throttle body to the intake.....I DONT SEE A VAC HOSE from there to there!..I'm I blind?

could it be that in stock mode, running 92 octane can do this?...

for the bog issue Matt is suppose to send me another file....

Much Mahalos.
Gil

 

[JeremyH]

DO u have a cai ??

 

[ZeroSVT]

Yes he does, Its common that the hose coupler from the intake tube to the throttle body can get crimped up into the throttle body by the clamp.

 

[JeremyH]

Um if u have a cai and are returning to the stock tune u r going to have problems. Thats why most cai's require a tuner.

 

[ZeroSVT]

Just a few thoughts, I have seen people over tighten the Cold air intake at the throttle body to much, causing the tube to create a opening to let in to much air under the TB. Look under the throttle body where the cold air intake meet and look for a large gap.

Most common problem