BOOSTEZ

iTrader: (1)

I have been having this quick hesitation problem with my EVO ever since I got the car. What it does is when I hit the gas, the car will accelerate properly and get to a certain rpm and then it will cut back and then give me full acceleration again to redline. It only does this once. It's like a small hiccup. I thought a reflash would take care of it but it didn't. It only does it when it's real hot outside too. This led me to believe the car is just running a tad on the rich side (at night it doesn't do it).

I just got the TBE yesterday and it is more prone to do it now. I'm getting the car custom dyno tuned on Shiv's dyno on Friday.

I just wanted to know what you guys think it may be other than needing a tune.

-M

evilevo8

iTrader: (1)

turbo lag perhaps? coz i get that also on hot dayz and i live here in vegas...

mobounce

iTrader: (6)

almost sounds like your ECU is pulling timing??? I could be tottally off here...anyone?

Nad1370

iTrader: (1)

Do you have an open air filter?

Under hood heat to and open air filter would also cause it to lag a bit more than stock.

SilverEvo8owner

iTrader: (3)

check and see if you have any leaks in the intake

BOOSTEZ

iTrader: (1)

No, I know the difference with the ECU pulling timing.. the car will fall flat on it's face and stay that way up to redline. It's like a hiccup but it's not turbo lag either. Turbo lag is when I mash on the gas and the car takes a second before it accelerates.

Why could it not be that the car is too rich at a certain rpm/load?

-M

BOOSTEZ

iTrader: (1)

Leaks in the intake won't cause this. I would notice a leak with low boost. And the car would be consistant with leaking out the air upon acceleration.

Remember, it's a hiccup. Nothing more.

-M

Compjoc

iTrader: (21)

sounds like boost cut. maybe ur spikin too high. do you have exaust?

BOOSTEZ

iTrader: (1)

Yeap, but I also have an XFlash. Doesn't that eliminate boost cut?

-M

SilverEvo8owner

iTrader: (3)

if you hae air leaking past the MAF it will do it. My car did it

What mods do you have?

bigjhoney

iTrader: (12)

It would be more prone to spike in very cold weather, than in hot weather like he said. Does it throw any cel's? Boost cut is alot more than a little hiccup, feels like ur hitting a brick wall. Let shiv take a look at it on friday.

BOOSTEZ

iTrader: (1)

Exactly.

No cels have ever been thrown on the car.

Yep.

-M

BOOSTEZ

iTrader: (1)

Just TBE and a reflash. That's it!

-M

dsm95hybrid

iTrader: (14)

Boost could be blowing out the spark. Check your plugs and gaps.

Turboholic

iTrader: (12)

hopefully, it's not your clutch slipping.