So I am pretty new to mitsubishi and eclipses, I just did a timing belt on my 1998 eclipse GSX and I have had the car for about a month. I noticed when you floor it and the boost comes up it kind of studders, like the car jerks a little. does anyone know what could be causing that the car has60k original miles on it.

 

Have you done any mods to it yet? If so please list them.

 

First off, Id like to know what its cutting out at. Have you installed a a/m boost gauge?

 

It is bone stock except magna flow exhaust and a K & N filter, when I floor the pedal the boost starts to kick up. As the car accelerates it kind of studders, the car still accelerates fast but it is like little jerks, its sort of like the feeling of the tires slipping just for a second. The acceleration is not smooth.even if you are crusing and 65 in 5th gear and you floor it it will studder when the boost kicks in.Could it have to do with the timing?

 

wastegate stuck?

 

I keep thinking its just not running stoich for some reason. Well, then again, I guess that much is obvious.

 

I just changed both timing belts too, any thoughts?

 

Wait... i know what this guy is talking about. I had the same thing with the GST... its normal

 

What gas are you putting in? When was the last time you changed your plugs and wires?

 

I just changed them, I put bosch wires on it and some new plugs called E3s about 200 miles ago, I am using premium