ULTIMATERX7

I dynoed yesterday with my to4s @15psi, and the a/r's were perfect. They were between 11-12, but I was getting a little ignition breakup at 6500 and up. After 6500 the a/r's were 10.6-11. I have checked the stock coils and have new plugs and wires. I also have a crane hi 6 amp. History of the car has always have ingition problems, that is why I bought the amp two years ago. After the dyno I did 10 or so runs with it. With my wideband showing the same a/rs I blew the motor. The question is could a faulty ingition do this, ie ignition breakups? If so what ignition setup has worked the best. Do ignitors go bad, also do crane amps go bad?

rx72c

iTrader: (8)

What computer you using, the best setup i have seen workin is a LTX8 with 4 bosh coils model no. HEC715 and these are excellent. You could also use a haltech with these coils and they would probably work better cause of the finer tuning. Get new ignition leads and get b9egv spark plugs to avoid detonation.

ULTIMATERX7

I have a wolf 3.0, what is an ltx8 and how much are they included the coils. I have a crane and I could get two coils to replace my leading for 100.

BLUE TII

iTrader: (9)

hitting 100% duty cycle feels just like ignition break-up to me.

What are your injectors, pump regulator and filter. Have you calculated inj duty cycle of your maps for the boost and rpm you are seeing?

12 is risky AF to me. Did you actually notice power increase going from 11 to 12?

I bought 2 crand hi-6 and LX9 coils for the leading plugs trying to fix my 100% inj duty cycle problem...

Maxthe7man

Talk to ChrisNg, he has the wolf 3.0 and has had the same problem, he fixed it with an msd upgrade on the leading side...
I had a similar problem with the haltech in my car, but found that grounding the shielding on the cas wiring fixed it... I would get a 16,000 rpm reading in the datalogs, and the e6k would engage the rev limiter whenever I crossed over the 10psi barrier...Max

Resource

Gary, it's a completely new ecu. Microtech...... I don't think you want to change ecu's do you? Maybe to something with more support

ULTIMATERX7

I have 550s and 1200s. these should be enough to handle 425. I couldn't it past 370. I have grounded the coils. I dont need a new ecu, and there is product support know. This car has had an ignition problem even before I installed the ecu. I dont know if my coils are bad only under high load or maybe my amps is bad, I'm not sure. Can the ingnitor go bad. If I get two coils for the leading can I use one amp. so from the ignitor to the amp, from the amp, splitting the wires to the two coils. Is these how it works.

Godzilla-T78

replace the coils, plug wires, and run all 9s for plugs.. my car blew 3 motors because of bad ignition components.. Get rid of the crane... get a msd 6AL.

BDC

Good advice on the coils, but I would like to raise a red flag about the spark plugs being suggested. You may not be aware of this rx72c, but non-resistor type plugs like the B9EGV, B10EGV, etc. are a bad idea. Because of the lack of resistor, there is so much RF noise being tossed about as a result and the ECU winds up getting erroneous signals from the trigger input (standalone systems like Haltech).

B

ULTIMATERX7

Ok I'll trash the shock coils and amp, but where can I get a good deal on the msd and 2 coils. Can I have one msd run two coils for the leading. And what about the trailing coils. And what about my stock ignitor do they go bad? I do run all 9s, I have 10s but I didnt know when I should use them.

ULTIMATERX7

I just looked at the msd 6al w/ a rev limiter. Is the msd 6a w/ out the rev limiter, is this unit just as good. And what coils do I get, I''ll need the unit number. Thanks for the help.

SPOautos

yea, just get the MSD6a if you dont want the limiter. You can get them on Ebay for $100

BDC - Where did you get that information on the B series plugs? I know numerous people including myself that run B10egv plugs, in addition they were suggested by Chris Anderson (he puts them in his customers cars) and some other well respected members of the forum. I dont know anyone thats ever had problems with them. I'd like to hear some more info about this.

STEPHEN

STEPHEN

Godzilla-T78

i have the one with the limiter.. its great. and my dis-2 has a 2step limiter or stuter box built in...

ULTIMATERX7

the b10 plugs are not bad I just did not see a difference. I going to get the msd but can I use two crane lx91's or is it better to use msd blasters. The cranes are less expensive.

BDC

We got that by surprise by Ari at RP here in Dallas. We were there for something else that evening and he mentioned the plugs thing to us (it came up since those were the plugs we had just purchased). Apparently, it was a problem with a customer of theirs or someone they knew. The owner had used the plugs and blown a couple of engines back-to-back and couldn't figure it out. Turns out the lack of resistance in the plugs he used was the culprit that caused the interference problem. It seems to only be a problem with some aftermarket EFI systems and apparently not the stock one.

Someone with more knowledge of this could chime in and go into further, technical detail.

B

enzo250

Maybe his wiring of the stand alone was the problem.

The Trigger Wires should be shielded and need to be routed away from possible dangers. Keep them away from the alternator wires.

Godzilla-T78

go msd dude.. I am sure crane stuff is ok, but i trust only trust msd on my own car.

twokrx7

iTrader: (1)

Something to be wary of ... if you are experiencing ignition breakup your afrs may read much richer than actual. Recognize that the unburned fuel is dumping into the exhaust giving a false rich condition.

crispeed

I've never had a problem as of yet with the EV-series of plugs. I know of many other people that have been running these plugs forever also without any problems.
As of late I've been using the BR10E-IX Iridium plugs on the street cars. These are performing(longer life, better economy and smoother running) a lot better than the older EV series so far.
You know what they say in this buisness. One man's luck.........!

93 R1

Godzilla...

Are you running 1 MSD 6A on the leadings and 1 DIS-2 on the trailing? What coils are you using?

eViLRotor

iTrader: (2)

I have the Wolf 3D as well. I made sure to keep the CAS wires away from the other stuff. Do you have the resistor soldered to the cas wiring?

Also, be sure to check that the input trigger sensitivity is correct.

Marcel Burkett

A friend of mine was having similar problems with his turbo 11 , he had stock coils and three MSD 6A boxes , one on the lead and one each of the trailing plugs . At anywhere close to 500BHP , there would be a lot of ignition breakup , ended up costing him a couple engines, turns out that the problem was with the stock coils , they couldnt "recharge " quickly enough (or something like that) so he just put in a PAIR of MSD BLASTER coils on the leading side and the problems disappeared totally , the car revs out to 10000rpm , without a stutter!!. The MSD tech told me that the new MSD BLASTER HVC coils would be ideal for a high HP rotary street car , I also run a pair of MSD 6A boxes , one on each lead plug with its own coil , I use TURBO11 trailing coils for my lead coils , soon to be upgraded to MSD HVC though .