1INSANEGTO

iTrader: (13)

What would you recommend to start with. On high boost (20psi overboost set to 25psi) it seems I'm getting spark blowout. It's fine at low boost (10psi) with no issues.

Before it was fine under high boost and the car made 800rwhp. So no clue on why I'm getting this now. E85 hard on the plugs? I think my plug gap is at 23 now....

1INSANEGTO

iTrader: (13)

56 views and not one response.......

ghost-1

iTrader: (4)

run it around 18 thats where mine is at 16 psi. What plugs are you running?

bttlfed98gt

iTrader: (13)

NGK R5671A-8 out of the box

2000RATA

I run Denso iridium plugs gapped at .025" on E85 with truck coils. No one wants to pay the money but I highway cruise, stop and go traffic in the city with a/c and no trouble. Even when its cool out. Heat range is 8 or 9 if they were NGK's.

LS1NOVA

iTrader: (12)

.020 here, had the same issue on anything over .025 at 18psi and up.

9sectruck

iTrader: (9)

Im at .025, 20psi, tr6 e85 and it loves it... Tried 7 and throttle response was night and day different

oange ss

iTrader: (50)

.028@15 psi on E85, TR6's

1INSANEGTO

iTrader: (13)

We are going to put it back on the Dyno to make sure it not lean, fuel pressure issue or confirm its a spark issue. I don't have a wide band in the car so dyno is the best bet.

I miss high boost

Cam72aro

iTrader: (28)

Here's an idea, get a wide band in the car. Any turbo car without one is a train wreck waiting to happen.

1INSANEGTO

iTrader: (13)

Yaaaa deal with that is I don't have a mounting location. This is not a mustang or camaro its a cadillac lol

Cam72aro

iTrader: (28)

I know it sucks, but I would find a way somehow. What if you have a fuel pressure issue, or something else that you could have saw on the wb before you went into boost and destroyed 8 pistons or a pair of heads. It also helps to diagnose problems like this.

CameronVic

iTrader: (5)

Bullet proof vests are heavy and cumbersome, but they have the potential to save lives...

oh, and I ran my NGK B8EFS right out of box. They didn't blow spark out even as I went all the way to 23psi and burnt a piston nearly in half!

Sales@Tick

iTrader: (3)

I hope you are using a wide band on the dyno though right? Is it a eddy current or intertia dyno?

1INSANEGTO

iTrader: (13)

Well ya lol. It's a mustang dyno.

Like I said best thing to do is put it back on the dyno and check everything.

Johnv

Valve Float can give similar symtoms, misfire at higher boost.
What valve springs you running ?
Also check all your plug leads.

Sales@Tick

iTrader: (3)

Well at least your getting a good amount of heat in the plugs on the dyno it being a eddy current dyno where load is placed on the vehicle.

86lxnotch

iTrader: (3)

i run BR7EF's at .022 gap on 20+lbs

1INSANEGTO

iTrader: (13)

Plugs are TR7IX gaped at .23