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Discussion Starter · #1 ·
I want to install my ETS Exhaust and AMS Widemouth down pipe this week. The shop doesn't do a tune but another will that is 30 miles away. I also have a Cobb tuner that i've done a Stage 1 upgrade. I want to get it tuned, kind of lean to save gas as I got a job that is further away.

Should I:
1. uninstall the stage 1 upgrade
2. get the exhaust installed
3. do the tune
4. then if its not gas efficient run the the Cobb tuner that makes it gas friendly?

Any suggestions are appreciated.

Respectfully,
Josh
 

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Wouldn't bother trying to tune an Evo with the priority being to "save gas", especially with the risks associated with leanness. 1-2mpg is really not worth it in the grand scheme. Get a hybrid compact car if you want great gas mileage, or a diesel or something.

Tune the Evo for the mods, but if you don't have a good shop near you, get it tuned by Clipse3GT or kozmic27, or one of the other guys who offers remote tuning.
 

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Uhm, you don't tune the car necessarily lean for economy. Fuel economy comes from staying closed loop, where the car is striving for stoich. There are some timing/MIVEC changes that can be made to make it better...but not as much as you think, maybe a few MPG. If you are the type of person that checks your tire pressures ever few days for fuel economy, you may have gotten the wrong car. I normally rock 13mpg, heavy foot, and I am running 11.7 AFR, the only time I am closed loop is at red lights. When I drive to a 100 mile event I get 21mpg but I am trying to economize (stay out of boost) to get there and back so I don't arrive with a half empty tank. :innocent:
 

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Discussion Starter · #5 ·
Thanks for the information. I didn't know if it was a huge money saver. I believe the shop is reputable but I will do the research. So from my understanding I should just install all upgrade. Get a reputable tune and my foot will determine how much my tank will last.

Respectfully,
Josh
 

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can someone also chim in for my question kinda relates... if i install downpipe and tp do i need to get a tune asap or could i just drive it for a while and tune it when im done putting on the rest of my bolt-ons? ive done searches and im finding 50/50... i know i wont get the full tuned potential hp, but without tune it should still run fine and have a little added power. please correct me if im wrong? thanks!
 

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can someone also chim in for my question kinda relates... if i install downpipe and tp do i need to get a tune asap or could i just drive it for a while and tune it when im done putting on the rest of my bolt-ons? ive done searches and im finding 50/50... i know i wont get the full tuned potential hp, but without tune it should still run fine and have a little added power. please correct me if im wrong? thanks!
Yeah totally fine. :)
 
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