4G63_EVO

iTrader: (4)

So I got tuned yesterday at RRE, (Car feels amazing now). Yesterday I noticed in 2nd gear while WOT the car would BOG/hesitate a bit then pickup again. Today its doing it throughout 2-4 gear. I contacted Rick who tuned the car and hes saying it might be spark plugs. Just looking for opinions before I change em out. I also have some flutter under high boost in 5th gear I think its my BOV leaking

bdonIX

iTrader: (5)

how many miles on ur current plugs? pull em and take some pix. I had the same issue and got new plugs and a tune touchup and all was good.

4G63_EVO

iTrader: (4)

Honestly not quite sure, havent changed them since Ive had the car..
I need a retune after I change the plugs?

analogEvo

iTrader: (2)

Make sure the plug gap is correct. If your old plugs look fine just gap them and re install.

Personally I never boost high in 5th.

AreSTG

iTrader: (4)

just reading the title of your thread, i was thinking spark plugs. Since you have an 8, new plugs are what $5 total and 10min of your time?

4G63_EVO

iTrader: (4)

Yeah i think im gonna switch them out before MOD. When I asked Rick if I should get the same plugs he replied "Z" does that mean anything to you guys?

Bmurray

iTrader: (5)

probably spark plugs...

4G63_EVO

iTrader: (4)

Only had time to pull cylinder 1. I think it looks ok in regards to it being fouled. But the gap im not sure about at all.. check it out




This pic is High quality and you can see the gap

egis

Maybe your tuner installed no lift to shift also?ask him.if you have nlts it will buck between shifts if you Lift to shift.

4G63_EVO

iTrader: (4)

I have no lift to shift but I'm talking about. Let's say I shift, stay in that gear a bit then WOT it bogs

ctfpevoVIII

iTrader: (4)

Those plugs look spent to me, the insulator part seems to be completely brown . Also it looks like there iridium, you can always go with a ngk copper one they just need to be changed more often.

egis

How's your car act on 2 step?any suspicious behavior?I mean before it builds boost maybe misfiring or shaky rpms?

4G63_EVO

iTrader: (4)

nope, perfectly fine. My car has what I think is a slight miss but it comes and goes.. Only at idle..

4G63_EVO

iTrader: (4)

What gap would you guys recommended Robert over at RRE said at least a 19?

dastallion951

id say plugs my problem was similar ran pretty good cruise and at idle, but wot it would bog, its cuz my plugs were worn out. if they havent been changed in a while it would be good to do. What plugs you have in there now. Personally I swapped from ngk copper one step colder plug to one step colder iridium plugs....they out last the others, n to me personally 15 isnt worth changing almost every 5 k. Good luck