Hi guys any suggestions is greatly appreciated. Just got done installing a hahns 16g stage II turbo . In my 1998 gs 420a motor . Still have a few things to tweak here and there but my check engine light been coming on and stayed on . Need some help on clearing it out . And also when I get up to 4000 rpms my engines sputters and kind of stayed there . It wouldn't go pass 4000 rpms and kinda loose power .

Have you identified the code in the computer causing the Check Engine Light? That is your first step before clearing it.

Originally posted by CODE4
Have you identified the code in the computer causing the Check Engine Light? That is your first step before clearing it.

Thanks CODE4 for replying back . I just got done with the install a few days back . Just now starting to button things back up . No I haven't identified the code for causing the check engine light . Sorry for asking but how do I go about in doing that ? Do I need a code reader to plug in the ecu ? I don't have one . What do you recommend?

Any will work alright that has decent reviews - you could probably head over to Amazon.com and search for an OBDII code reader/clearing tool.

Originally posted by CODE4
Any will work alright that has decent reviews - you could probably head over to Amazon.com and search for an OBDII code reader/clearing tool.

Got it. . Thank you so much will be looking into getting one . Will check it out and see how it goes . 👍