FAQ 101??????

[wespiatt]

I still don't understand the pressure surge. I just put on a Air raid intake and I can hear the a whooshing sound at low rpms but into the throttle. is this the surge? And what is actually happening on a pressure surge?

Thanks,
Wes

[tbobmopsd]

I have a 2002 7.3 (525). I am looking at adding a banks monster exhaust and an edge juice with attitude and that is all. I don't haul much heavy currently but would like to start pulling a fith wheel for camping. Are the mods worth it or should I stay stock?

[2180]

Ur better to stay away from programmers and go with a custom tuned chip as in a d-p tuner, especially if towing.

[gubni]

The most effective is watching the EGT’s of your truck, and backing out of the throttle a little on a big hill. Letting off the throttle tells the computer to pump less fuel in, which lowers the EGTs. Letting that Chevy pass you up the hill isn’t a great feeling, so there are other options.

I am glad to know there are other options!

[Musclford]

I'm brand new to TheDieselStop. Thanks for a super intro piece. I have had my Super Duty since new and finally have the itch to try some of the upgrades you mention. I know now from reading these forums that there is no "magic wand" that will do all I would like to do, but it seems possible to regain some of the MPGs I lost when I increased the tire size from stock, while giving the truck a bit more capability to get out of its own way.

Lot's to learn.

You may not have lost as much as you think. Bigger tires mean your speedometer is slower, which makes the odometer incorrect. Therefore less miles rack up per tank.

My tire change resulted in 3 miles per hundred miles difference. So every tank I have to add 10-12 miles to the calculation... It makes me feel a little better....

Musclford

[37Driver]

Thanks for the tutorial. I'm new here too and this makes it all a little easier to understand.

[GSF35099]

You may not have lost as much as you think. Bigger tires mean your speedometer is slower, which makes the odometer incorrect. Therefore less miles rack up per tank.

My tire change resulted in 3 miles per hundred miles difference. So every tank I have to add 10-12 miles to the calculation... It makes me feel a little better....

Musclford

I am new to the forum as well but had the same thing happen when I added 35" Mud BFG's. I lost a 10th of a mile each mile. I have been running 35" BFG's for 173,000 miles and never changed the odometer so have to add that .1 back in.

Thanks again to all for this string as I am new to really working on my PSD other than adding the chip, tranny cooler, gauges, and installing the in-cab control for my Rancho shocks. Sure is nice to adjust the ride on the fly.. No more stopping and getting under the truck to change the ride..

I have just purchased a new tranny temp gauge and working on getting a 4" exhaust along with a new 6 position chip. Time to make some good mod's..

[alias7.3]

Originally Posted by wespiatt

I still don't understand the pressure surge. I just put on a Air raid intake and I can hear the a whooshing sound at low rpms but into the throttle. is this the surge? And what is actually happening on a pressure surge?

Thanks,
Wes

I too have the cool whoosing sound after installing a Tymar but mine's louder the more I get into it. Once I hit fourth it goes Plee-e-e-sh. I hope thats the wastegate opening up and not surge.

[bigblacktractor]

Quote:
As a general rule of thumb 100 horsepower or less will be safely under 25 psi of boost.

No. Depending on intake and exhaust, almost any increase in power can produce over 25 PSI. With a good intake and exhaust, you can get about 21 PSI without any chip or programmer installed.


i have an afe intake with a 4"turbo back exhaust and hit spikes of 35 with my stock turbo and 100hp chip