I was wondering if anyone knows what the spark plug gap should be on a 05 Evo, and if it should be adjusted for a GT3037?

 

i adjust mine @ .024 and they work perfect

 

Whatever you car likes... There is no specific gap to run with a modified car.

 

Just to let you know I put my plugs in without thinking and it wasnt running right when on 50% load or higher. Pulled the plugs and the gap was around 40. Re gapped to about 22-24 and perfect!. Especially with iridium plugs.

 

22-24 has worked fine for me as well on a high boosted car.