I am contemplating putting a chip in my 2010 GTS Sportback. My questions are:

1. Who makes a chip that will improve gas mileage and performance?

2. Are there any chips that will not violate my warranty or will all chips void my warranty?

 

This one's good.

 

God I hate it when people talk about 'chips' lol.
What u want is a reflash. Try Works.

 

hahahahhaahhaha next thing will be nos!!!

 

Google works mitsubishi, RPW, RRM mitsubishi. also lurk on the forums more, its more than likely your questions have been answered already.

 

Also u could get someone else to make customs maps for u with a dyno tune, which should be the best, but also the priciest and I dont recommend it until uve done at least stage 1.
Rather wait with your warranty for a while...

 

Facepalm.

 

thought u might need this

 

Sprint Booster and RRM timing module

thats as good as it gets

 

 

First. Theres no such thing as performance with good gas mileage. If you want 50hp and 40 mpg never gonna happen. now if you want 50hp and 20mpg we might be getting somewhere. Anytime you add horsepower your talking about adding more air. Anytime you add more air you need more fuel.

second. If you do anything to your ecu that cant be reversed your warranty is null and void. Best bet intake, exhaust, header, etc. However if your motor has a issue directly related to a installed aftermarket item it will void your warranty as well.

And just t add i had a chip in my 99 dodge dakota from jet chips. Only thing it did was fool the engine into thinking it was running cooler dumping massive amounts of fuel into it resulting in a 90mile per tank drop and lower ets in the quater mile. before chip 15.6 all day long. after chip 16.1