Check ur fuel map, lower ur gap, or smooth out your timing like besides 0 0 1 2 2 2 4

Just go like 0 1 1 2 2 3 3

 

My fuel is great, perfect afr for boost. Pulled plugs showed no signs of excess detonation or any fuel related issues, gap was also great. Timing is fine there is no major knock to speak of so its making me think its not related to my tune. Great suggestions steven but already ruled these out. The amount of misfire I am getting would have to show MAJOR knock if this was the cause, I have had counts of 12-15 without any misfire where my logged run with only a couple counts of 4 had hella misfire

Also scanned my car and no trouble code or pending codes.

Edit: Just realized I did not check the gap just the condition of the plugs which were fine but I will pull them back out tomorrow and adjust the gap to be safe

 

My plugs are gapped at .38 inches, i get an occasional blow out at WOT at 6-7 PSI but im also maxing my injectors at 119% IDC so that could cause some issues as well, but it doesnt record any knock. Im hopin its a combo of runnin out of fuel and the spark plug being gapped to big, but everything else is good, running 13-14 timing advanced at 6 PSI with no knock at WOT :-) If everything checks out computer wise aka tune, then check some of the mechanics of the spark and fuel

 

Hmmm... that gap does seem a little big. What are the rest of you turbo guys running for gap? While researching this issue plugs and wires come up alot and a gap of .028 has come up a couple times in my searches. I might try this gap and see what happens.

 

my wrx is gapped to .028. they recommend for me .032 to .028 for the wrx.

 

03lance Im having the same issue but im lazy to change my gap settings.

It could be the type of spark plugs because when I was running the Bkr7e heat 7 I had to gap it to .18 just to run without misfire and that was at 10-11 psi, but my idle was still being messed up and eventually the spark plugs got to black due to the low gap and the idling issues and eventually caused more misfire after a couple weeks.

Now since im running iridiums im at .25 and I get occasional misfire but im about to lower them to .21-.23. And if I have a misfire here and there then I know for a fact its got to be the stock fpr. I know JRR has ran 15 psi with his stock but every car is different and I think the fpr gets to the point to where it cant keep up with the demand just because it was initially meant for N/A. So heres are best bet. Run iridiums at a lower gap like I said and since im off tomorrow I will re gap them and let you know 03lance on whats up. When i ran the heat range 7's I had nothing but issues after a couple weeks.

Ok I think we need another solution for the injectors and rule me out if you think im wrong. I think what we should have done was use universal injectors besides wrx injectors. I noticed that this past month I have had idling issues like a mother and I know my engine is getting F'd up because I keep running lean from pressing on the pedal to keep it idling at a stop light. I think the injectors are good for moving but not for idling. I have tried many different methods with the idling portion of the map and I have had no success so I am looking into another tyoe of injectors to use. If you notice that zulu and demon from what I know are using different injectors and I havent read anything about them having any issues since the past year I have been on this site. I think we need something close to are stock injectors specs.

Any Ideas on what could be done to solve it? this was just a thought not a demand. im thinking about going with these
http://www.horsepowerfreaks.com/part...d_Low_Imp/1587

plus I love the blitz brand. It couldnt hurt to try something new.

 

I am going to go out and check the gap now. I have been running those same plugs for almost a year with no issues so it baffles me why it would start now. My fuel is perfect so its not related to fuel. I did notice a wierd smell a couple nights in a row heading to work I am wondering if something has melted causing a weak spark. I hope its not a head gasket cause that would blow.

 

If it was a head gasket wouldnt it be blowing white/ grey smoke alot? i know its prob hard to tell in this cold weather tho. I hope its not either man. Check the plugs again, check the wires and their connections, also the coils.

 

Well a head gasket can blow a couple different ways. In this case since there was no smoke or air bubbles in the coolant my gues would have been it blew between cylinders. However all that behind me now as ITS FIXED YAY!!!!!! Steven is a genuis. Pulled my plugs back out check compression which was excellent 150+ across the board, checked my plug wires resistance which was only like 3 and 1k ohms which is far under the max spec of 19k then re-gapped my plugs to .028 which seems to be the magic number for turbo cars and viola not a misfire to be had all the way through. My first pull however I did boost to 15 lol I promptly relieved my foot from the throttle and dropped my mbc down a couple clicks.

 

Yea I lowered mine to .21 and I went to 14 without a misfire looks like we need to do a monthly check and make sure our plugs are gapped correct. One of my plugs gapped itself to .28 and my others were at .25

 

Maybe ill re-gap my .38 to a .28 lol

 

Ya that .028 really seemed to do the trick just fine. I am happy it was not something more major

 

I haven't said to much on any of these forums...but I have read for hours and have gotten all the answers and winged my way threw my intire turbo build lol however but I have had this problem for a long time with the spark plugs....

If I leave them at .038 for long enough they seem to find themselves around .045 after a while....I have never understood this nor has anyone near ever had an answer...but it would randomly start missing in boost, and have weird idle issues.

I moved mine to .028 and usually never have a problem for a while.....
this usually seems to be the trick for almost all turbo cars...

 

Same, using .028 and no problems.

 

Well my wierd stumbling idle issue appears to have lessened. Not sure why but definately is not getting worse and seems like IF it happens its only for maybe 20 secs now or so. Maybe something was semi clogged idk. Steven I am going to send you some info to see if any of it helps your idle.