Base Timing at idle?

[Drifter27_04]

I have done some searching but can not really find what I am looking for.

When setting the base timing I know stock you would set ~750 idle @ 5°. My question is if I am idling ~1000rpm's would I need to set base timing based per idle (in my case 1000) or as stock 750rpm? I have 272's and it tends to gasp for air when idling low rpms and cuts off.

 

[TSIfreek]

Its always 5* no matter what RPM your idle is. Just make sure you ground out the wire and have the engine at full operating temp.

 

[Drifter27_04]

Its always 5* no matter what RPM your idle is. Just make sure you ground out the wire and have the engine at full operating temp.

That's what I was assuming but needed to make confirm it.

For questioning this I have some knock issues in my mid to high RPMS that has never been there before my recent build this year and basically nothing changed just fixed a spun rod bearing. I will be redoing my timing to make sure its not off one tooth

Any suggestions about knock issue would also be helpful

 

[El Cuervo]

Just a quick question on this. I don't mean to steal the tread but I have a question. What and where is the wire that you are supposed to ground when setting base timing?
Thank you very much.

jorge.

 

[turbotsi92]

Just a quick question on this. I don't mean to steal the tread but I have a question. What and where is the wire that you are supposed to ground when setting base timing?
Thank you very much.

jorge.

It is on the firewall right behind the battery. If it hasn't been messed with it will have a plug in it, you need to remove it, and take an alligator clip or something and attach it to the metal pin inside the plug, and obviously the other end to the ground terminal on the battery. the idle shoudl die down when you ground this plug if you have it grounded properly.

 

[El Cuervo]

Ohhh I see. The same plug that its used for when adjusting the Idle via the biss screw! Now I know. Thanks for clarifying this. I thougth there was an actual wire (non plug) that had to be grounded. My fault. I miss interpreted.
Thank you very much and to the thread opener, I apologize for stealing the thread. Lets get back to the topic.

jorge.

 

[TSIfreek]

That's what I was assuming but needed to make confirm it.

For questioning this I have some knock issues in my mid to high RPMS that has never been there before my recent build this year and basically nothing changed just fixed a spun rod bearing. I will be redoing my timing to make sure its not off one tooth

Any suggestions about knock issue would also be helpful

If your cam timing is off that can possibly cause knock. If its still knocking back it off to 4* and try it then. Do a boost leak test also as this will cause the problem you descibed as well.
What are you using to tune with?? What fuel and boost level are you at??

 

[Drifter27_04]

If your cam timing is off that can possibly cause knock. If its still knocking back it off to 4* and try it then. Do a boost leak test also as this will cause the problem you descibed as well.
What are you using to tune with?? What fuel and boost level are you at??

I am using DSMLink v2.5 but using the new ECMLink interface. I am currently using 93 @ ~24psi and checked boost leaks found 0 (this has been awhile back).

I have pulled timing alot (more than normal in past pulls), to even throw a side ball in this matter I have tried throwing 112 octane and was still getting knock.

when grounding out my timing through ECMlink the car idles up, I have to make sure of this evening as I maybe incorrect but it seems to be the case as I questioned this myself before.

 

[TSIfreek]

I am using DSMLink v2.5 but using the new ECMLink interface. I am currently using 93 @ ~24psi and checked boost leaks found 0 (this has been awhile back).

I have pulled timing alot (more than normal in past pulls), to even throw a side ball in this matter I have tried throwing 112 octane and was still getting knock.

when grounding out my timing through ECMlink the car idles up, I have to make sure of this evening as I maybe incorrect but it seems to be the case as I questioned this myself before.

Ok if your on link set the base at 5* and leave it and remove all your timing using link.
That is alot of boost on 93 octane. When I was on gasoline I ran 17 psi to get any decent timing out of it or it knocked like a bi***.
Try lowering the boost. Also have you replaced the knock sensor recently??
When grounding your timing the engine should loose RPM as the timing is being backed off for setting purposes.

 

[Drifter27_04]

Ok if your on link set the base at 5* and leave it and remove all your timing using link.
That is alot of boost on 93 octane. When I was on gasoline I ran 17 psi to get any decent timing out of it or it knocked like a bi***.
Are you running a wideband??

Strange you say to much boost for the turbo as I have known the turbo efficacy is from 22-28psi from several people. Before this years rebuild I was running 22-23psi seeing little/no knock. I am just confused with the entire thing at this time.

Yes I am running a wideband within the RPM range its knocking the A/F ratio is in the low to mid 11's

 

[knochgoon24]

I've run plenty more than 17psi on pump 93. I ran 25psi at the track with no problems, well non fuel related.