HELP! pinging

I have a 5 speed 95 gt with a D&D 342 stroker with 10.7:1 compression, roush 200 iron heads, holley systemax kit, custom ground comp cam, full exhaust, full MSD ignition, 255 lph pump, 34# injectors, 70mm bbk throttle body, 90mm mass air calibrated for the injectors, denso iridium plugs and 4.10 gears.
the car made 343 hp and 375 ft. lbs. of torque to the wheels with 2.73 gears. it still pings on race fuel too.

car has been dyno tuned twice at mustang magic, they locked timing at 26 degrees, and the pinging won't go away at low rpm under a load. I don't have a standalone tuner yet, I was offered a DFI fms and I'm looking for any input to help figure this out. Turbo people say i need a standalone fuel management system... my wife wants to one day be able to eat dinner every night, so cheaper would be good too.

thanks in advance

What would be best for him to buy a Accel DFI Gen 7 or something else

What are your full mods???

bc if your egr system is removed, the computer could be throwing a ton of timing at your motor to compensate for lack of egr air flow.

I'm having the same problem with mine

If they lower the MBT table it should act as a limiter for the timing under all conditions

That sounds like a very nice combo you have put together

You need a tune that is on the same level as the rest of the combo :Word:

IMHO ... Stuff like locking the time (mechanical methods)

That Ain't Tuning

I would advise that you find a method that will give you ......

Maximum Flexibility ... OR ... Total Control

With your ability to adjust your Spark and Fuel

PMS ... Tweecer ... SCT ... or something along those lines

That way ... Y O U will have total control
NOT ... someone else

and

You can do a nice tune that is C U S T O M to YOUR specific combo

Grady

Others may disagree, but that is a lot of timing for that CR. The other thing to consider is I have seen cases where switching from Iridium plugs to plain old copper plugs magically makes detonation go away... I'd also put a stock ignition back on it.
Don

Great advice all around.

Wes

I didnt notice the iridium plugs but yes copper plugs one step colder than stock are what I would use , and the Iron heads are less forgiving than aluminum heads with higher compression , I would get a Sniper Commando, SCT pro racer , or Tweecer setup for tuning and adjust the timing and fuel until you get it right , complete standalone is not needed and is overkill for your setup