28 psi max?

sleeps · Feb 27, 2014

205/100s and s366 should make more right? Still running srlxx for stock injectors and turbo at the moment. Is that whats limiting me or should i check for something else?

powerstrokedkid87 · Feb 27, 2014

check for exhaust leaks....also what are you reading boost from?

sleeps · Feb 27, 2014

powerstrokedkid87 said:
check for exhaust leaks....also what are you reading boost from?

I do have a little leak from manigold to up pipe. Ill grt on that and see if it fixes it.

Reading boost from thr insight

KCTurbos · Feb 27, 2014

sleeps said:
I do have a little leak from manigold to up pipe. Ill grt on that and see if it fixes it.

Reading boost from thr insight

The factory map sensor will only read so high. I have seen some tunes let the map sensor read to 28psi boost and others read 33 psi boost... I would venture to say the computer will only read accurately to about 25-27 psi.

I would imagine you are much higher than those numbers. But the only way to know would be to get an actual boost gauge.

6 L chevy eater · Feb 27, 2014

I'd reccomend getting a new tune Also, and make sure u get exhaust leak fixed

ODAWG714 · Feb 27, 2014

You need an aftermarket boost gauge Dan

Zmann · Feb 27, 2014

the insight will read at least 32 psi

Strokin572 · Feb 27, 2014

With the Insight can't you get one of their pressure sensors to use so it's not reading off of the map?

Zmann · Feb 27, 2014

u would need the starter kit and a sensor but it could be done

I think Matts tunes read lower than actual

I know i wouldn't see the PSI #'s I do with Wildmans tunes

I don't know if He was boost fooling or ?

Zmann · Feb 27, 2014

OP how hard have you worked it ?
try a good hill run ;-)

your using the records function to pull up max boost correct ?

2wd-fire · Feb 28, 2014

KCTurbos said:
The factory map sensor will only read so high. I have seen some tunes let the map sensor read to 28psi boost and others read 33 psi boost... I would venture to say the computer will only read accurately to about 25-27 psi.

I would imagine you are much higher than those numbers. But the only way to know would be to get an actual boost gauge.

when i put autoenguity on my truck it read all the up to 40 psi then flatten out.

KCTurbos · Feb 28, 2014

The map sensor can read up that high... but boost is map minus baro...

The factory map sensor is a 0-5v sensor. Its range is 0-50psi. But as you get very close to the edge of the parameters of the sensor it will not read accurately. So theoretically if you could completely max out the map sensor to 5v and then subtracted the baro sensor (50-15 = 35) you could read up to 35psi boost through the factory computer but I would not trust that number... With that said I have never seen that before. Every tune I have ever tried and with working with different people usually only hit either 28psi or 33 psi (not sure why those numbers). And those are with guys who have a stand alone boost gauge and know they are hitting 40-50psi of boost.

MorganY · Feb 28, 2014

Lol. It should make more than 28 psi. You probably aren't atomizing because those 205s use too much oil.

windrunner408 · Feb 28, 2014

FWIW, with my Insight CTS, I could only ever read 27-29 psi of boost at WOT (most of the time it was 28 psi) right a long side by my electronic boost gauge that was reading 39-42 psi...