How to get rid of knock?!
Thread Starter
Joined: Mar 2012
Posts: 513
From: Minnesota
Ok sounds good. Oh maybe it matters maybe it doesn't, when I saw the knock and the lower than normal boost, I was in 3rd. when I saw 0 knock and regular boost it was in D. does that matter? my buddy asked if my wastegate was controlled mechanically or by vacuum? anyone know? I have no clue lol
You don't have a "wastegate" per say, you have a BBV (boost bypass valve), it is on the supercharger. Know the 3 vacuum lines that come off the top of the supercharger? The bottom one goes to the BBV. It is vacuum operated, but there is a solenoid that could limit boost in certain situations... Mine limited me to 4 psi on a 3.4 pulley. Take the solenoid out, run it off vacuum if yours gives you trouble 
Thread Starter
Joined: Mar 2012
Posts: 513
From: Minnesota
nice! Lol is it a bad thing if it limits your boost? any way to get that removed so it pushes as much boost as possible if that's even a good idea? Lol
does removing the bbv solenoid affect the car or the performance in any negative way? what are the pros and cons to this cuz it sounds iffy running without a solenoid lol
does removing the bbv solenoid affect the car or the performance in any negative way? what are the pros and cons to this cuz it sounds iffy running without a solenoid lol
If you remove the solenoid (bypass the vacuum lines) then you will run normal max boost for your mod level. I run ~10 psi on a 3.4 at sea level.
The solenoid limits boost when traction is lost or at high speeds IIRC.
The solenoid limits boost when traction is lost or at high speeds IIRC.
Last edited by nitehawkjcb; Mar 26, 2013 at 11:38 PM.
STILL SLOW
Monte Of The Month -- May 2010
Monte Of The Month -- May 2010
Joined: Sep 2008
Posts: 7,082
From: Nubraska
I have k&n intake speed daddy headers cat+ res delete aftermarket mufflers 180tstat colder plugs and thicker spark wires. when I had my 3.8 pulley I was seeing 0 knock. I went directly to 3.4 as zzp and intense racing recommended.
I wish I had the money for an intercooler lol
So now I gotta go back up in pulley? I'm going to try 3.6. should I re tune after switching back to a 3.6?
I wish I had the money for an intercooler lol
So now I gotta go back up in pulley? I'm going to try 3.6. should I re tune after switching back to a 3.6?
Thread Starter
Joined: Mar 2012
Posts: 513
From: Minnesota
does removing the solenoid affect knock at all?
I have a TBS I haven't put on, but even that I've heard does nothing. is there anything else I can add to help with knock that isn't ridiculously expense. by that I mean under 200 lol
I have a TBS I haven't put on, but even that I've heard does nothing. is there anything else I can add to help with knock that isn't ridiculously expense. by that I mean under 200 lol
IMO, the solenoid won't save your engine if it's going to blow up anyway. Do some research on it though.
What's a TBS? Throttle body shield?
Modded 1.9 rockers will probably get what you want. Rid of that knock. But remember, 1.9 rockers can't be used with an aftermarket cam.
What's a TBS? Throttle body shield?
Modded 1.9 rockers will probably get what you want. Rid of that knock. But remember, 1.9 rockers can't be used with an aftermarket cam.
Thread Starter
Joined: Mar 2012
Posts: 513
From: Minnesota
throttle body spacer. and yea I suppose you're right ill have to Google it haha
I've thought about the 1.9s but rather go with a cam. just trying to save up for it. I was thinking maybe high velocity throttle body? gen v swap? would that get rid of knock?
I've thought about the 1.9s but rather go with a cam. just trying to save up for it. I was thinking maybe high velocity throttle body? gen v swap? would that get rid of knock?
