I am trying to figure out how high people have gone with the completely stock ignition before it starts breaking up badly.

Right now I can floor my car at 27-28psi with the 35R on pump gas/alchy.

I decided to see how high I can go before it starts knocking... I got scared before it started knocking. I have the Alchy turned up almost as high as it goes and the car breaks up at 32-36 psi. I am not sure if it is from the amount of alchy I am spraying in there or if it is the AFRs or if it is the ignition.

I have stock coils, stock wires and either BPR8Es or BR8ES (I have used them both and both have the same breakup problem).

The EMS does not "seem" to be measuring the AFR correctly from the Zietronix either... at idle and cruising it seems to be close but at WOT it does not seem to match... the EMS claims I am at 12.0-12.7 but the Zeitronix display says in the 11s. Not sure whats going on there but Ill figure that one out.

 

Hey Trina , I just went threw the same thing at 400awhp ignition took a s hit
we went to AEM cdi and that lasted till around 500awhp.We went threw 5 AEM boxes before they admitted they had a problem.Busher , from what I heard threw the grapevine had the same issues.We then tried MSD which couldn`t do sh it. HKS couldn`t hang either.I contacted Jay@Mynes Performance in Mesa,AZ.
He had been telling me for 2 months that he had the answer and he did.MOTEC is the shizzle.This system has worked flawlessly we`re at 619awhp on a Mustang Dyno.Pushing almost 40psi and no blow out!I have an 04 pushing 400awhp and its blowing out spark at 24psi. The Motec system cost around $800.00 for a small box that is half the size of anything else we tried and has a 10x faster prosessor.Learn from my mistakes that cost me $1000s and months of down time.

 

I think Buschur is running their ignition solution on the 800hp black evo. That's caught my eye, especially for the price.

 

Are you sure the input calibration is correct in the AEM for the Zietronix? This would be the only reason the AEM would read incorrectly becuase the Zietronix box does the reporting on the O2's. The AEM just reads the output. As for you ignition 32-36 psi is all the stock ignition will be worth honestly. You should be fine going to the HKS DLI or COP from buschur. I have the best ignition luck with the BPR7IEX plugs.

 

You mean you are using an EMS and some Motec ignition or you are using the Motec (For engine management)

 

I ran 30psi on a GT3076 and 34 psi on a RX6 turbo w/ no issues on the stock ignition system w/ BR8ES gapped to .023.

 

AEM ecu and Motec ignition If Id known I would of gotten the Motec ecu $$$$,arund $6k

 

parts are hit n miss,some work ,most dont

 

Well I am still not sure what the deal is with the ECU. The AFRs will sometimes read 12.5-12.7 and 10 minutes before that they were reading 11.5 across the board. I think the EMS is making up some of the numbers on its own

Funny thing is it doesnt knock at all... even when it reads 35psi at 12.7 AFR on pump gas / meth. For some reason I dont really think I can trust the numbers too much right now.