what size is the hole in the stock TB?? i'm having some pretty bad idle issues, especially with the AC on, and i want to try drilling a hole in the TB to see if it helps any.
hole in TB
- Thread starter SaleenGT2001
- Start date
kalvick
Founding Member
im pretty sure drilling a hole in the throttle body is a bad idea. i think its 65mm?
stock TB's have a small hole in the blade for extra idle air flow. thats what i'm refering to. not the TB itself.
hotmustang331
Active Member
Dont do it lol. I tried it and it messed my idle up alot (2000). I drilled the hole to big though, and then restricted my IAC to counteract. AC off it still idles @ 1000-1100 and AC on it idles @ 800ish (normal). On cold starts it will die if I turn on the AC, so its annoying.
Im going to have to buy a new TB, but for now ill live with it.
I drilled the hole, the size of the heads of the screws that hold the blade on.....the stockers hole was the same size as the head of the screws, so I just copied. But apparently the stock TB had smaller screws LOL.
Im going to have to buy a new TB, but for now ill live with it.
I drilled the hole, the size of the heads of the screws that hold the blade on.....the stockers hole was the same size as the head of the screws, so I just copied. But apparently the stock TB had smaller screws LOL.
mine dies with the AC on too. it surged at anything under 2000 RPM.
i'm starting to think the BOV may be the problem!
i'm starting to think the BOV may be the problem!
nyuk98gt
15 Year Member
SaleenGT2001:
Just say no to the hole, please. You need to adjust idle (and all the idle parameters) via the tune. I suggest that you datalog and see if the MAF signal is steady at idle and the behavior when you stab the throttle. You're right that the BOV may be affecting the MAF (i.e.-backwashing). Is it possible to move the BOV or is it in the Saleen "stock" position? Is this idle problem new or old? Did you change something or modify the engine recently? More info, please.
Chris
Just say no to the hole, please. You need to adjust idle (and all the idle parameters) via the tune. I suggest that you datalog and see if the MAF signal is steady at idle and the behavior when you stab the throttle. You're right that the BOV may be affecting the MAF (i.e.-backwashing). Is it possible to move the BOV or is it in the Saleen "stock" position? Is this idle problem new or old? Did you change something or modify the engine recently? More info, please.
Chris
i have just changed my IC setup. it has a tial 50MM BOV about 6" from the outlet of the IC and about 12" down from the MAF. it does have a blow thru MAF and the idle hasnt been great since the tune but it is now a LOT worse than it was before. when it was tuned they said the IAC was maxed out and couldnt pullany more air into the engine.
Skud
Member
I actually have my TB and plenum off the car right now.. Today I noticed that my TB does NOT have a hole in the plate. It is the stock TB..
Riley
Riley
i heard you were supposed to locate the BOV/Bypass as close to the SC (or turbo) as you could get it
atleast thats what our tuner recomended to us and it worked out pretty good
Posts like this and the general stuipidity in this thread overall are why I have written off 4.6 tech here
Posts like this and the general stuipidity in this thread overall are why I have written off 4.6 tech here
sounds like someone is having a bad day
hotmustang331
Active Member
I thought I was on his ignor list? And with posts like that I wish I was.Well just so noone thinks im crazy, my car has horrable drivability issues. Iv tried everything and drilling the hole in the TB was a last ditch effort to fix my low RPM bucking problems. That didnt do it either. I was just so fustrated that I did it and just said I can always buy a new TB if it doesnt work....and it didnt really work lol.
Bye bye Killy....we sure as heck wont miss your attitude. Jeeze.
Bye bye Killy....we sure as heck wont miss your attitude. Jeeze.
i bet his ignore list is almost everyone on here
maybe he should have some input rather than bashing
hotmustang331
Active Member
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