how far does the turbo guage needle go?

[OrangeAirsoft]

I have an 86 740 Turbo sedan. Fun to drive, poor mileage (~15-16 city) though even after O2 sensor, high flow intake, and new catalytic converter. Ever since I got the car however, i notice the turbo needle goes only up to about 3 o'clock position (well inside the yellow). I just though that is as far as it goes. Am I right? Or should it go all the way through the yellow band of the guage?

also, how do you increase the boost a little? i know 850 owners shorten some rod somewhere and get some increase in boost, does it work on the 740 too?

thanks!!!

[John DeBrock]

As far as the needle goes...I dont think it goes any further, a friend of mine has one and no matter how hard he pushes it doesnt go byond that 3 o'clock position. maybe both are broken haha. About boost, I dont know much more than what you already know about that rod somewhere, if you want more juice getting aftermarket turbos would help, but thats not cheep.

[Guest]

install a manual boost controller like a halhman between the wastegate and the intake manifold. Install a real boost gauge and put the car on a wideband o2 sensor and make sure you aren't running to lean under high boost and you'll be fine.

[wetbackZO]

wideband o2 sensor??? Teach me teach me teach me...!