Engine Builders talk.
5 Year Member
Joined: Apr 2013
Posts: 6,135
Likes: 885
From: New Orleans, LA
From what I gather, the L's and HD's don't come with knock sensors, correct? How would the knock sensor play into effect on mine & Jfergs builds going from N/A to charged? When they tune it, do the delete the sensor electronically or is it implemented in the tune? 4x4dave may know also.
On N/A there turned off. My tuner tried to use them with some tricks he said he had but in the end it didn't work.
The J&S system I don't know much about but it attaches to the coils and retarder timing to only those cylinders that need it!
Wayne
5 Year Member
Joined: Apr 2013
Posts: 6,135
Likes: 885
From: New Orleans, LA
Well damn all y'all! Here I was thinking my truck melting a hole was caused by Ethanol or an injector but now leaning towards the tune(Sal@PSP). Ran 14.5s at the track.
And then y'all bring up knock sensors. I always believed the new tuner I had tune it after the L motor was installed turned them off. But now that I think about it. Even though it made more power and felt a lot stronger it ran mid 16s at the track do to timing being pulled. Figured that he had my IAT2 set to pull timing at a low temp to save the motor. But now I'm thinking he may have forgot to turn them off. ****! Was tuned for 13* of timing and would only see 4-5* at times.
I know it had a 13 sec pass in her! Guess we will never know!
Wayne
And then y'all bring up knock sensors. I always believed the new tuner I had tune it after the L motor was installed turned them off. But now that I think about it. Even though it made more power and felt a lot stronger it ran mid 16s at the track do to timing being pulled. Figured that he had my IAT2 set to pull timing at a low temp to save the motor. But now I'm thinking he may have forgot to turn them off. ****! Was tuned for 13* of timing and would only see 4-5* at times.
I know it had a 13 sec pass in her! Guess we will never know!
Wayne
Senior Member
Joined: May 2009
Posts: 2,926
Likes: 144
From: Tallahassee, Fl
Well damn all y'all! Here I was thinking my truck melting a hole was caused by Ethanol or an injector but now leaning towards the tune(Sal@PSP). Ran 14.5s at the track.
And then y'all bring up knock sensors. I always believed the new tuner I had tune it after the L motor was installed turned them off. But now that I think about it. Even though it made more power and felt a lot stronger it ran mid 16s at the track do to timing being pulled. Figured that he had my IAT2 set to pull timing at a low temp to save the motor. But now I'm thinking he may have forgot to turn them off. ****! Was tuned for 13* of timing and would only see 4-5* at times.
I know it had a 13 sec pass in her! Guess we will never know!
Wayne
And then y'all bring up knock sensors. I always believed the new tuner I had tune it after the L motor was installed turned them off. But now that I think about it. Even though it made more power and felt a lot stronger it ran mid 16s at the track do to timing being pulled. Figured that he had my IAT2 set to pull timing at a low temp to save the motor. But now I'm thinking he may have forgot to turn them off. ****! Was tuned for 13* of timing and would only see 4-5* at times.
I know it had a 13 sec pass in her! Guess we will never know!
Wayne
5 Year Member
Joined: Apr 2013
Posts: 6,135
Likes: 885
From: New Orleans, LA
Was so curious jut texted the turner and asked him I he could check to see if it was turn off. He said it was. IAT timing pull was aggressive and low to save motor.
Wayne
Senior Member
Joined: Jan 2011
Posts: 1,086
Likes: 65
From: CO
From what I gather, the L's and HD's don't come with knock sensors, correct? How would the knock sensor play into effect on mine & Jfergs builds going from N/A to charged? When they tune it, do the delete the sensor electronically or is it implemented in the tune? 4x4dave may know also.
My thoughts are to just install a new one, if you find out you need one later your looking at 5+ hours to remove the entire intake manifold and add it.
Edit: Im always 2 pages behind. Seems consensus from evreyone in here is they are not needed. IMO you could always just leave the old one on there... Won't hurt anything escpeically if you just tune them out.
Last edited by 4x4dave; Jul 11, 2014 at 08:30 PM.
98 F150 5.4L E40D/4R100
Joined: Nov 2006
Posts: 28,534
Likes: 7,638
From: MI
Well damn all y'all! Here I was thinking my truck melting a hole was caused by Ethanol or an injector but now leaning towards the tune(Sal@PSP). Ran 14.5s at the track.
And then y'all bring up knock sensors. I always believed the new tuner I had tune it after the L motor was installed turned them off. But now that I think about it. Even though it made more power and felt a lot stronger it ran mid 16s at the track do to timing being pulled. Figured that he had my IAT2 set to pull timing at a low temp to save the motor. But now I'm thinking he may have forgot to turn them off. ****! Was tuned for 13* of timing and would only see 4-5* at times.
I know it had a 13 sec pass in her! Guess we will never know!
Wayne
And then y'all bring up knock sensors. I always believed the new tuner I had tune it after the L motor was installed turned them off. But now that I think about it. Even though it made more power and felt a lot stronger it ran mid 16s at the track do to timing being pulled. Figured that he had my IAT2 set to pull timing at a low temp to save the motor. But now I'm thinking he may have forgot to turn them off. ****! Was tuned for 13* of timing and would only see 4-5* at times.
I know it had a 13 sec pass in her! Guess we will never know!
Wayne
5 Year Member
Joined: Apr 2013
Posts: 6,135
Likes: 885
From: New Orleans, LA
I actually don't know for certain haha. I replaced mine with a new one and never looked back. I can follow up with my tuner. From my understanding it would still work. But I'm not 100% sure. My thoughts are to just install a new one, if you find out you need one later your looking at 5+ hours to remove the entire intake manifold and add it. Edit: Im always 2 pages behind. Seems consensus from evreyone in here is they are not needed. IMO you could always just leave the old one on there... Won't hurt anything escpeically if you just tune them out.
Waune