TheOutlaw

Will the TST R49 read boost over 40psi?

Thanks,
Tyson

wap

Most likely not. The factory sensor is the culprit not the tst. Anything that reads boost from the MAP can only read as high as the sensor. Some may see 42 and others only 38 but the norm is about 40.

TheOutlaw

Thanks wap.. Looks like I need to buy some gauges.

jwb600

ran into that issue on my 05. thats when I bought an analog gauge

Bswope

Yeah i only see 40 psi on mine! Thats why i went with gauges too! I set it to 38psi cause of the little stocker!

RamWheelsBy4

The TST R49 installation manual specifically states that it can not read over 40psi. Definitely need manual boost gauge with almost any box.

03qclb5spd

I like the analog boost gauge better anyway, it's fun to watch.

farmboykjb5.9

Is there any other way you can still use the boost gauge on the TST cause i have the same problem

JCLeary

Yeah, you can use it to compare your boost readings to the manifold absolute pressure readings while at altitude. You'll notice the difference in analog boost readings versus the MAP sensor. It's interesting to see how at 7000' will take 10lbs of boost to make 2 lbs of manifold pressure.

Yes, they're reading the same air pressure, but the gauge is comparing to ambient pressure, whereas the MAP sensor is not.

Just entertainment, I guess.

973604x4

hmm interesting good info!

cquestad

You will experience some very slow fueling from your tst if it is seeing 1/5 of "boost". Leave it hooked up where it is...and get a mech gauge.

I use mine to compare fooled boost to actual boost. lol