demetlaw

Dave came up with a single plug mod for the 3rd gen a few years back.
Does anyone have details.
My 94 R2 was modded and has sat for 5 years.
Local guys are not Rotary geeks.
Hoped to do simple tune up, but not sure what to tell them
Many thanks
Tony D

ZoomZoom

iTrader: (2)

May as well take it to NJ and have Ihor sort it out for you. If it's been set up with just leading plugs you don't want a non rotary shop messing with it. They won't know what they are looking at.
IRPerformance | 55 Prospect Street, Metuchen, NJ 08840 Tel. (732) 662-1794

FourtyOunce

iTrader: (15)

The mod is basically a cnc machined aluminum hat that goes on the trailing plug. I have a set in the garage.

silverTRD

iTrader: (36)

I'd like more info. My curiosity is getting the better of me.

GoodfellaFD3S

iTrader: (213)

Supposed to prevent detonation by deleting the trailing plugs altogether.

Not exactly ideal IMO...... I'll happily enjoy my water/meth injection and run all four plugs

Also, I've heard Dave is taking a step back from the tuning game due to health issues and Speed1 is now run by someone else.

IRPerformance

iTrader: (41)

It was an attempt to prevent detonation as most detonation seems to stem from the trailing plugs. The trailing spark plugs were removed, a machined plug was pressed in, then the spark plugs were screwed back in with wires connected and all to hide the "mod". Mazda went through a lot of effort to engineer 2 plugs per rotor housing, and even 3 on some race motors for a reason. Without them you lose power and efficiency. In my opinion it was a poorly executed bandaid for badly tuned, poorly setup cars. In Dave's defense, ecu and tuning technology wasn't even close to what is available today and some customers will find a way to break even the best setup car. That being said, we haven't blow a motor in the shop in 10+ years.

Montego

iTrader: (1)

Aw yes the anti detonation device...