I am seeing abnormal amounts of knock (7-11*) near redline in 1st gear and frequent misfires on the 1-2 shift whether using NTLS or shifting quickly. Does anyone have any ideas on what could be causing this? The only culprit we can think of is a leak in my stock charge piping, as the plastic tab that holds it on broke off.

Thanks fellas.

Just went out on my break and did some runs on a dead-end road next to my work. It misfires horrendously on the 1-2 shift now. If I run it up to red line in 1st you can feel it pulling timing as well. Strangely, this doesn't happen in any other gear except 1st...

 

yOU STOCK?

 

Yes sir- Bone stock. We've been messing with a tune, but even flashing back to my stock tune this happens.

 

ive been having p0300 and p0303 misfires a lot going into dealer tomm

 

No CEL's here, very strange...

 

you should get it to the dealer or something to flash it to stock. cuz maybe its davids tune. he knows what he is doing but maybe that stock tune isn't really "the stock tune"

 

weird...no CEL on my car either and i am tuned by Trifecta....Take it to the dealer! do u have a normal tech?

 

What trouble code is it? P0300 P0303 etc. Bad coilpack or spark plug usually.

 

ya im stock now still misfiring tho...think its my coil pack

 

Term, no trouble codes thus far..But it is VERY apparent it's misfiring when I shift. I suppose a dealer visit will have to suffice.

 

7-11 holy **** that blows engine

hurry to dealer fast

 

I had about 3-4 degrees of KR and slight misfires in the first 1k miles.

Now with the bigger intercooler I have 0 KR and only small misfires when the car is first warming up. Stock car other than intercooler.

Yeah I thought 3 or 4 was normal, but 7-11 is terrible.

 

i get up to 2.9 but its from clutch slip.... 7-11 is rediculous

 

it is his stock tune i saved it. but he was getting like 11* in first gear and it kinda jumped around in other. i think its your intercooler piping because it wasnt doing it before your piping broke so you probably have a small leak. and also at wot his car boost 20psi and drops to like 18psi. but i havnt seen a car knock so bad it was crazy. but you need to take it in asap to see whats going on

 

TOFU???

Holy ****, I haven't seen you around in forever. What happened to the truck?

I guess I need to hang out on this forum more often...

 

thats what i said when he posted the other week lol