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-   -   issues at high speeds after performance upgrades (https://www.scionlife.com/forums/scion-xa-xb-1st-gen-drivetrain-power-1638/issues-high-speeds-after-performance-upgrades-229745/)

hotroddelux 11-30-2014 04:58 PM

issues at high speeds after performance upgrades
 
Hey peeps, well I have searched and searched the forums and have not found an answer so Im going to ask in a new thread.

I have a 2005 Xa. I recently installed a cold air intake that routes the air filter to the drivers fenderwell, a Jet Mass Air Flow Sensor, a performance header and high flow exhaust.

The problem Im having is...when I drive 70mph or more I feel the car kind of chugg slowly almost like its running out of fuel. I have no check engine lights on...everything looks good on the scanner as far as sensor values, and the car runs great at all other various driving conditions.
I am wondering if I need to upgrade my fuel injectors or if it could be some other kind of problem.
If its injectors.......how much bigger should I go?

:P

Basebllstar 12-03-2014 04:28 PM

I'd swap the old Flow sensor back in. Just a guess, but the lack of gas could be from the sensor not sensing as much air as is actually there.

hotroddelux 12-03-2014 11:33 PM

Ok. Thanks for the reply. I will try that tomorrow. I think I will drive it with the scanner hooked up and record the values of the 2 different sensors. I will post the results.


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