Drilled hole now what?
Thread Starter
Teching In
Joined: Apr 2005
Posts: 9
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Drilled hole now what? My shop just drilled a hole in my throttle body blade to help with the puslating idle on my 226 228 570 570 114 cam. They did no new programming and I was wondering if I need to to some myself. I am expecting hptuners this week. My car is a 2002 vert a4 vet. I did notice my idle went up at cold start.
hmm, can u tell me how much they drilled out of it?, in my a4, the 232/234 in there is horrible, no tune tho yet, but i cant get it to keep anywhere b/t 600 and 1100, and ofcourse at 600 it dies almost immediatley, at 1100 giving it a lil gas i can keep it running steady and fine.
TECH Apprentice
Joined: Sep 2002
Posts: 366
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From: west coast
[QUOTE=patmo]My shop just drilled a hole in my throttle body blade to help with the puslating idle on my 226 228 570 570 114 cam.
Have you read those threads that say STOP DRILLING THOSE THROTTLE BODYS! You just use the idle adj screw and reset the TPS. I put in a cam about a week ago and it worked for me. Drilling just lets in more air. Opening the throttle blade just a tweek does the same thing. Well maybe you already know all this. Good luck with it.
Have you read those threads that say STOP DRILLING THOSE THROTTLE BODYS! You just use the idle adj screw and reset the TPS. I put in a cam about a week ago and it worked for me. Drilling just lets in more air. Opening the throttle blade just a tweek does the same thing. Well maybe you already know all this. Good luck with it.
Careful drilling the TB hole - it can help with idle but can cause other problems down the road if too big (stay under 1/4").
P0121 code is common on drilled tb cars when the PCM senses too much air for the throttle position/load. The MAP window on P0121 can easily be tuned out but can be a nuisance if you don't have access to tuning software.
It took me a long time to realize the hole in the TB was why I was getting that code !
Bad30th
P0121 code is common on drilled tb cars when the PCM senses too much air for the throttle position/load. The MAP window on P0121 can easily be tuned out but can be a nuisance if you don't have access to tuning software.
It took me a long time to realize the hole in the TB was why I was getting that code !
Bad30th
