frankieh Member 29 Member For: 10y 7m 22d Gender: Male Location: Perth Posted 31/01/19 03:08 AM Author Share Posted 31/01/19 03:08 AM Hi, I've changed coils before too.. but then I spent 560 buying what are supposed to be the worlds best coils.. used in massive boost applications. and then I put a voltage booster on them so they get a minimum of 14volts all the time. When I put all that in, it was the first time I had a great idle and no spark blowout on boost. but I will try swapping in some known good ones if it's still an issue after I change the plugs I guess. Link to comment Share on other sites More sharing options...
skidxr6t skids Donating Members 2,754 Member For: 11y 3m 21d Gender: Not Telling Posted 31/01/19 09:31 AM Share Posted 31/01/19 09:31 AM id use genuine ford coils over those for sure, sorry. don't think voltage booster is required either, just a good tune, good fuel supply & properly gapped spark plugs. Link to comment Share on other sites More sharing options...
frankieh Member 29 Member For: 10y 7m 22d Gender: Male Location: Perth Posted 31/01/19 12:06 PM Author Share Posted 31/01/19 12:06 PM Well I had perfect genuine plugs and coils and if I only run petrol I'd have been fine... But with the JTG LPG injection I can run 16PSI with advanced timing giving me 520ish HP at the back wheels. The problem I had with the LPG is that I either had a rough idle. (small gap and LPG) or a good idle, (standard gap) and spark blow out after about 12PSI. So I bought the WeaponX coils and they did not help at all.. as it turned out they didn't help at all because they use loads more current and voltage than the coil rail can provide. Hence the voltage booster.. With 14ish volts to the weaponX coils, I could run a 1.1 gap for a perfect idle on LPG and still not blow out spark at 16psi. Plus the car actually felt super smooth in a way I've never seen in another falcon before.. at least it did until my recent issues. I don't really think it's the plugs or the coils to be honest.. my reason for that is because it isn't one cylinder that goes when it's spluttering as is usually the case with a dud coil.. the engine loses all power so for whatever reason it seems like the PCM is doing this.. I wish PCM's had a syslog of events I could look at. Losing the weaponX's would cause problems because the dwell is calibrated for them in the tune. Link to comment Share on other sites More sharing options...
frankieh Member 29 Member For: 10y 7m 22d Gender: Male Location: Perth Posted 24/02/19 11:24 AM Author Share Posted 24/02/19 11:24 AM Hi all, The problem was a dodgy sparkplug.. looked perfect from the outside but the combination of the 80k volt coils and the voltage booster must have burned though internal insulation.. put a new set of plugs in and it smoothed right out. thanks for all the suggestions. 1 1 Link to comment Share on other sites More sharing options...
Puffwagon Puff Gold Donating Members 15,115 Member For: 9y 2m 20d Gender: Male Location: South Australia Posted 24/02/19 11:42 AM Share Posted 24/02/19 11:42 AM (edited) You're welcome mate. It's what a forum is here for. Edited 24/02/19 11:43 AM by Puffwagon Link to comment Share on other sites More sharing options...
Rab WOT? Moderating Team 10,980 Member For: 11y 1m 24d Gender: Male Location: Frankston, 3199 Posted 24/02/19 11:58 AM Share Posted 24/02/19 11:58 AM Great to see another LPG turbo having fun Link to comment Share on other sites More sharing options...
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