Popping at WOT

[Jasco]

I put on a Dr. performance stage 3 module and after a short jaunt on the highway my check engine light came on. Truck sounds like its got advanced timing or something, its ticking worse than it usually does. At wide open throttle it makes a popping sound for a couple seconds. I took it in to dealer and they could not find anything wrong. They had it for 2 days and finally I went with a mechanic and drove with the star scan plugged in, he said everything looked fine. I got rid of the dr performance module. Any ideas of what could be wrong? Thanks



Also I've got no kitty, nelson 41" muffler and amsoil filter on a silicone down tube for intake.

 

[16919]

Too much timing would be my guess.

 

[WUnderwood]

too much timing or draining the rail would be my guess

 

[Jasco]

The module is off the truck now and the ticking and popping is happening. Could it be the relief valve? Cracked injector? I have no idea. Thanks for the replies.

 

[16919]

what kind of box was it, timing, duration, pressure?

 

[DerekK]

I have a theory, I have an inconsistant poping in my 06 in level 5 with the juice. The low boost fueling is at max, and when I stomp in from a dead stop it lights them up then pops about 6 or 7 times. I believe this to be the rail draining. IF this happened to you enough (not sure how many times it would take) and you starved your fuel pump of lubrication running dry (sorry if this is babble) could it not prematurely wear out your pump. Then possibly cause your pressure to be low all the time, in turn causing your rail to run dry (and pop) without any boxes on your vehicle.



Please educate me gently if Im completely off base



thanks

 

[RDyson]

From all I have read, popping at WOT is from draining the rail. You should have seen the low rail pressure on the star scan if the relief valve was bad.

Did you drive it hard or baby it with the scanner hooked up?



Randy

 

[Jasco]

I was rodding the heck out of it with the star scan hooked up. It was a little icy in town but on the highway I let 'er open up 3 or 4 times. This popping is on a completely stock truck except for exhaust and intake. I had the Dr. Performance hooked up for about 3 days, then I got rid of it after my cel came on. Could my fuel rail be draining on a stock truck?

 

[Mark1si]

I had a Preditor box and I had the same trouble. (Boost and Fuel?) I never did figure out what the trouble was but I got rid of the box and it never did it again.

 

[OT-OF-HERE!!]

wot popping

I had that problem for about six months last year. It finally was solved with user adj timing feature on the TST. Timing, imho is one of those things that is compounded on stacking. For instance you can have a dl that is say 170hp and you stack it with a pressure box that's let's say another 100hp,. . you don't end up with 270hp increase. But if one has 15* of timing and the other has another 12* I do think that the timing is compounded and hence the pop. From all my stacking I've come to the conclusion that around 15 to 18* is optimum and over that you'll get injector ping at the least and the dreaded high rpm pop (on my truck it was sooooo loud it sounded like a backfire). Right now I'm fighting a de-fueling drop that is more like a cave-in and it lasts for a split second while in 3rd gear right b-4 the od shift and it doesn't pop or backfire,. . it's a stumble that's there for a second and gone and then the pressure recovers. So I'm saying a rail drop,... again,... on my truck is NOT causing a pop. Hope that helps.

 

[DieselMinded]

Too much RPM's



2nd Gens will do it at lauch with the Mighty Smarty Stacked Talking major RPMS there



DM