New to the diesel world.

[jlewis02]

Hello im new here and have many questions i helped a friend put a boost gauge on his 97 F-350 7.3L dully and i fever mest with a diesel before so we put it on the line going from the intake to something electical on the pasanger side i have no idea what it is but without the line on it the truck runs like crap.We want to know what stock boost is and how to add a little more hes getting 15psi peak but it takes forever to get there.


Sorry wrong fourm needs moved to 94-97 fourm Sorry

 

[95_stroker]

That is the MAP sensor, you need to "TEE" into that line with your boost guage and hook the hose back upto the MAP sensor.

Stock boost would probably be in the 15-17 psi range if no other modifications have been made to the truck yet.

 

[jlewis02]

Its teed but the gauge flutters above 10psi we have 1/4in vacum line going to the gauge and the sensor.

 

[BJS]

some fitting is loose most likely if you're fluttering that low. check all of the fittings and make sure your tee is clamped in good with hose clamps.

The other thing that can be done is a restriction placed inline to reduce the level of flutter that is inherent due to the small volume that is compressed and the opening & closing of the valves. Unfortunately I've only read about them never actually installed once since I don't see flutter until I'm over 30 on mine.

 

[jlewis02]

We took my bike to the dealer today 50ish miles and going up 15-20mph headwindand at 70mph he was at 14psi with a tail wind 15-20 he was at 10psi at 70mph is there something wrong with his truck? Also he has a 3in downpipe but i dont know what brand.

 

[95_stroker]

We took my bike to the dealer today 50ish miles and going up 15-20mph headwindand at 70mph he was at 14psi with a tail wind 15-20 he was at 10psi at 70mph is there something wrong with his truck? Also he has a 3in downpipe but i dont know what brand.

That actually sounds like fairly normal boost numbers to me.

 

[hheynow]

That actually sounds like fairly normal boost numbers to me.

I concur with 95_stroker. I max out at 13-14 psi.

 

[94f450sd]

yup around 15PSI max is stock boost.if you want more boost you need to add more fuel.first get a TYMAR or a DIY tymar intake and then a pyro gauge to keep an eye on EGTs.then get a chip from one of the site sponsers,i highly recomend www.beansdieselperformance.com .after the chip if you need more power get a set of performance injectors,again i highly recomend beans diesel for those as well.