Jump to content
SAU Community

Ls2 Coil On Plug Mod


Recommended Posts

a little hard with all my pipe work and hoses in the way.. however I will pull it off after the track day and test it..

lucky car runs a map sensor so will run fine without any hoses attached

will report back :)

if that's the case will need to run new power cabling as suggested, however my battery is in the boot!!

Link to comment
Share on other sites

a little hard with all my pipe work and hoses in the way.. however I will pull it off after the track day and test it..

lucky car runs a map sensor so will run fine without any hoses attached

will report back :)

if that's the case will need to run new power cabling as suggested, however my battery is in the boot!!

just crawl under the car and probe it

try running the 2nd power cable to the jump start terminal from the alternator if the factory cable is bad

Edited by Dan_J
Link to comment
Share on other sites

  • 2 weeks later...
Link to comment
Share on other sites

Why bother. As mentioned the ls coils have been tried and proven and are cheap.

No way would motorbike coils be cheap.

You would be surprised, motorbike coils are that dear, though I still can't find where it says these are motor bike coils, they look like Honda replacement coils, does anyone have a link to where we could that upgrade from :)

Scott at insight and I have discussed a coil upgrade for my 34 some time ago and he suggested Honda coils would be a good upgrade and would mean I wouldn't have to remote mount them or have to run leads

Link to comment
Share on other sites

just crawl under the car and probe it

try running the 2nd power cable to the jump start terminal from the alternator if the factory cable is bad

Followed your advice, did a probe when cold voltage was about ~13.6 and down to ~13.2 when I revved it..

Tried it again when the car was hot (after a drive to the shops & back) voltage was around ~13 on idle and dropped to about ~12.8 when I revved it.

This is pretty consistent to the drop I've logged from my ECU.

Now to waste more money :(

Link to comment
Share on other sites

Nice, got any more pics of that setup ?

not my setup but have all the bits to get it working :)

skim through the older pages of the thread to find the origin of the photo

Followed your advice, did a probe when cold voltage was about ~13.6 and down to ~13.2 when I revved it..

Tried it again when the car was hot (after a drive to the shops & back) voltage was around ~13 on idle and dropped to about ~12.8 when I revved it.

This is pretty consistent to the drop I've logged from my ECU.

Now to waste more money :(

yeah mine was a bit intermittent, after constant use the heat in the cable may make the power drop as well .

pretty cheap fix for myself:

$8- ba ford starter cable from wreckers

$5/10 - battery lugs from jaycar

keep the factory cable there and just add another positive cable to terminal in the engine bay to see if its a fix, if not will have to get a 2nd hand cable from a r33 wreck, welding store for the use of welder ground cable which i'm told is priced ok or ebay ;)

Link to comment
Share on other sites

I had some misfire on boost before I tuned my car last week, that cleared up after installing some ls2 coils I bought 2nd hand for 150 bucks, basically at the stock 2.5 ms dwell they were igniting a mix that was to rich for the stock coils to ignite, set up as coil on plug in wasted spark on an adaptronic 420d, trimmed the stock boot down and put em straight on the plug. Peice of aluminium angle with a few holes and all mounted nice.

After tuning on weds, I'm making 196rwkw with stock turbo, and stock injectors, only at a touch under a bar boost on shell 98

post-92228-0-54348000-1415354654_thumb.jpg

Edited by Scott Black
Link to comment
Share on other sites

  • 5 weeks later...

Installed my kit from Rick B at Mojo Performance and the engine is not starting. A few things to note. I have a piggy-back HKS FCon V-Pro ECU that is already tuned. Fully built forged motor with billet crank, Bullseye 375R turbo boosting 2.2 bar, redline set to 9500 rpm, 270 degree 10.8mm lift cams, high flow head, 1000cc Sard injectors, NGK Racing (temp 8 or 9) iridium spark plugs. ECU is still set to stock dwell so I thought I would plug in the new LQ9 coils (Araparts version) and Mojo wiring to test before having my tuner mess with the dwell settings. Well, the car won't start and misfires occasionally during the attempt to start. Any ideas? Is my setup to aggressive for stock dwell? Not enough spark at stock dwell settings? Or is something else going on?

Link to comment
Share on other sites

Your setup would have no affect when cranking, and stock dwell will work you coils pretty well, so setting is seriously wrong.

Have you checked voltage ar the coils? Was there another earth to install?

I'm not familiar with that kit, is it possible to connect the coil loom in the wrong order?

Edited by Ben C34
Link to comment
Share on other sites

Your setup would have no affect when cranking, and stock dwell will work you coils pretty well, so setting is seriously wrong.

Have you checked voltage ar the coils? Was there another earth to install?

I'm not familiar with that kit, is it possible to connect the coil loom in the wrong order?

I thought the same (that it should start and run at idle at the very least).

No, I have not had a chance to check voltage at the coils yet. I need to do that. Yes the harness has it's own ground that I have connected/grounded along with the engine harness ground using one of the bolts for the mounting kit that screws into the head.

No, I don't think it's possible to connect the individual connectors in the harness in the wrong order. Also, the kit comes color coded and with a great install diagram to match up to the stock wiring. I verified the colors on all wires and they appear to be accurate.

I don't know anyone first hand who has used the LQ9 coils connected to an HKS FCon V-Pro ECU. Also, the cam timing is not zeroed out so there is some overlap at idle.

The Mojo Performance kit is a plug on coil setup and I have read that without the resistance of the plug wires or resistor type spark plugs that there could be an issue as well.

Link to comment
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now



  • Similar Content

  • Latest Posts

    • I have been looking at some setting on the alarms for the Q60 and what buttons do and so and also been looking for details on the alarm in my V37 which is a standard issue with the car. settings like window roll up and a few others seem to not work at all. i cant seem to find exact info on V37 alarms so Q60 is all i can really go off i have not tried 400Z alarm settings or info yet so that will be next. any one got like a sheet of info on the alarm system in the V37 as all my documents are in japanese but i thought the system would basically be like standard through similar models? 
    • I had a fuel smell coming from the drivers rear and pulled the tank out to inspect where it was coming from, turns out the breather hose from the tank to the filler neck was perished. I’m going to Japan next week and I’ll grab it while I’m there  pulled the oil tank apart and started cleaning this crap out of it, some brake cleaner and rags got it looking new again 
    • Hmm. Was quite a few years ago now. I think I bought from a crowd in the US called CDT Audio. The speaker is the HD-6. The HD-6CF would have been the better option (based on T-S parameters), but they were discontinued in 4 ohm at that point in time. The HD-6 is a better driver in almost every other way (than the CF) - just not as good in IB. They still do the HD-6. They might even have a more suitable (for IB) option here.https://www.cdtaudio.com/cdtnew22/products/components/woofers/midwoofers/midwoofers.htm But, here's the rub. I was working in the US a lot back then, so I got them delivered to my US office and then just brought them back to OZ myself. I don't know if they will ship to OZ, and it probably wouldn't be great cost-wise anyway. As to results. They're driven direct off the rear channels of my headunit, because the headunit can be setup to run the rears as subs. So, not a lot of power being fed there. Nevertheless, there's no shortage of volume - the sub levels don't need or want to be boosted at all. The bass is definitely not what you would call "tight". It is definitely a bit delayed compared to a proper sub. But, with the great front soundstage and really good 6.5" woofers in the front doors, I'm getting most of the bass detail from the front and the rear is really only to extend the bottom end a bit. Works for what I'm doing. I mean - until recently you couldn't really hold a conversation in my car due to the fuel pump, and for many years I had tyres so noisy (Kumho KU36 at <50 tread depth) that I had to drive with earplugs anyway!
    • curious to know what drivers you chose and the results? quik mafs, says two 6.5s should roughly equate somewhere between a single 8" or 10" driver. i agree that IB is definitely the way to go in most cars imo.
    • S13 and R32 rear suspension geometry is horrible once you lower it (which everyone does). The camber & toe out ramp is very aggressive, hence it's common for the S13 boys/girls to use a S14 or S15 subframe as the geometry is light years ahead. I'm sure the same can be done on R32s, but I don't know anyone that has done that.
×
×
  • Create New...