hkp 0 Report post Posted February 8, 2015 My stupid shitty car is making mad, I can drive around with the boost controller off just fine, turn on the boost controller, up the duty cycle, and when it goes over 8lbs it breaks up. When I first installed my boost controller I could set it at 95% duty cycle and drive around just fine, now its just breaking up. While breaking up the AFRs are in the mid 11s to low 12s and it just stutters and will not go any faster, just stuttering until i let off and turn off the boost controller. I tried installing new plugs, no dice, pulled those plugs and gapped them to .030, no luch there either. I looked over the coil packs, no cracks, the wires look good, these were theones that came on the vvti from the engine importer. Any ideas? Share this post Link to post Share on other sites
Gordo 0 Report post Posted February 8, 2015 Are you running shity autodark, or chumpion plugs ? If .030 doesn't work, try .025. I had a Harley flat track bike a long time ago, in a galaxy far far away, that wouldn't run clean unless the plug was set at .016". Or go to hotter coils. Share this post Link to post Share on other sites
hkp 0 Report post Posted February 8, 2015 Im running bkr6e right now, i have some shitty chump plugs i can throw in. i am looking into running 6 coils, vvti runs 3 coils waste spark, thinking of just splitting the signal and tossing these extra coils i have on. i will try closing the gap a bit more tomorrow. Share this post Link to post Share on other sites
Gibbs 0 Report post Posted February 8, 2015 do you have any boost cut defender on there? Share this post Link to post Share on other sites
hkp 0 Report post Posted February 9, 2015 no but i doubt thats it because i ran this car at this boost with no problems for a long time. my biggest worry right now is that austin had some break up issues and his motor was hurt, i dont know if having lower compression on cylinder 6 is causing my break up. Share this post Link to post Share on other sites
Gordo 0 Report post Posted February 9, 2015 What, don't own a compression gauge ? Share this post Link to post Share on other sites
hkp 0 Report post Posted February 9, 2015 I do, 160-160-160-160-150-135 Share this post Link to post Share on other sites
hkp 0 Report post Posted February 9, 2015 i dropped some oil in that last cylinder and it bumped up, i know its not good, just wondering if that has any possibility of being a player in my ignition break up. Share this post Link to post Share on other sites
slapsticksammy 0 Report post Posted February 9, 2015 could you have a bad ground somewhere Share this post Link to post Share on other sites
hkp 0 Report post Posted February 9, 2015 when kyle had it a few months ago he went through this thing and redid a lot of shit that i half assed, while in there he checked my wiring harness and said my grounds were tight. I guess tomorrow on my day off im going through this thing and checking shit off the list until i run out of options. if all else fails, i will leave on kyles front lawn. Share this post Link to post Share on other sites
hkp 0 Report post Posted February 9, 2015 i went through the plugs, closed the gap to .025, checked compression with my harbor freight compression gauge, had a pretty even 150 across the board. i can run about 13lbs of boost before it stutters and shits on me. Share this post Link to post Share on other sites
Gordo 0 Report post Posted February 9, 2015 My son found my intermitant stumble on the Ratsun over the weekend, Poor crimp on a connector going to the ign. module. Was just lose enough that you could feal movement when pulling/pushing on it, plus most likely, a little corrosion, since it wasn't a weather tight connector. So I changed it out to a sealed connector, and soldered/sealed everything, and presto-change-o, no more intermitant miss. So, have you checked all the coil connections, and connections at the ECU ? Share this post Link to post Share on other sites
Austin 0 Report post Posted February 10, 2015 Chris, send me a video of what its doing. Share this post Link to post Share on other sites
hkp 0 Report post Posted February 10, 2015 I will send Vids later, I'm back to working days, no more night shift for a bit. I actually have to deal with people, I want back on nights. Share this post Link to post Share on other sites
hkp 0 Report post Posted February 10, 2015 Gordo, you may be onto something, I may pull the harness and do some looking around, reroute it and clean some things up. Share this post Link to post Share on other sites
Kyle 0 Report post Posted February 10, 2015 do you still have the iat code after resetting and leaving the maf plugged in? Share this post Link to post Share on other sites
hkp 0 Report post Posted February 11, 2015 car runs like a spotted ass ape! pretty sure it was the wire going into the coil pack connector that i pushed in that made the change but im not 100%. Last night i pulled the coilpacks, put my old packs back on and then noticed the wire going to the second coil pack was backed out. i put it all back together, pulled the ground on the battery and left it over night. got home tonight, hooked battery back up, checked for codes, had my normal 21 and 42, went out for drive with boost controller off, no issues, tried the boost controller at 50%, it ripped, set boost controller to 85% and ripped some 19psi passes, going to have to send you money for that clutch austin lol. car seems right, throwing some weird codes at me, i looked them up and everybody has varying opinions, codes 13, 21, 42, 47, 78. everything is irrelevant except code 13, anybody had any issues with a code 13 before? Share this post Link to post Share on other sites
Big Fuckin Shooter 0 Report post Posted August 26, 2015 I had a code 13 when one of my cam sensors was on its way out. Check the resistance of your cam and crank sensors against factory values and swap out the bad one for a good one and your problem should disappear. Don't know what the range is for sensor resistance anymore but I'm sure someone on here does. Share this post Link to post Share on other sites
tougekid1 0 Report post Posted August 26, 2015 Having the same issue right now. Changing to Super Spark (?) coils if I can't find a lose wire on the clips. Heard good and bad things about Super Spark coils. Anyone on here have personal experience with them? Share this post Link to post Share on other sites
Gibbs 0 Report post Posted September 1, 2015 i'm having the same issues right now with my 171 jz redid my coils and that didnt fix it. I'm thinking it maybe my battery wire as its a amp wire instead of your normal battery wire.(All i have at the moment) I'm thinking maybe my fuel pump isnt getting enough voltage. Also think it might be the plugs BKR6E Share this post Link to post Share on other sites
hkp 0 Report post Posted September 4, 2015 What exactly is it doing? Share this post Link to post Share on other sites
hkp 0 Report post Posted September 4, 2015 What exactly is it doing? Share this post Link to post Share on other sites
Gibbs 0 Report post Posted September 5, 2015 starts getting into boost then breaks up real bad and kind of limp mode. I got some ideas on things to try gonna do that then if that doesn't work ill be kind of stumped. Share this post Link to post Share on other sites
hkp 0 Report post Posted September 6, 2015 mine was coil pack wiring, if you need to test a part let me know and ill see if i can help you. Share this post Link to post Share on other sites
Tbone 0 Report post Posted September 6, 2015 What is your voltage? How are your spark plugs? Hows your afr?What octane rating of gas are your running?And yes coil packs are everything.Hows your fuel pump doing? Share this post Link to post Share on other sites
