7.3 towing advice.
ISSPRO EV2’s are the industry standard and that company’s reputation is literally legendary. Fuel pressure and EGT cannot be measured with OBD2, so I recommend at least these gauges.
It looks like my up pipes are leaking. I haven't pressure tested them or the intake system yet. But I figure I will go thru it all now and upgrade while I'm in there. So Bellowed up pipes, 4" straight exhaust, 6637 filter setup, wicked wheel, banks big head, new intercooler boots, any O rings and seals I come across.
What am I missing? Should I delete the exhaust flap while I'm in there? Any other mods. Thinking about a DP tuner once thats all done.
The stock air filter flows PLENTY and filters adequately. However, the filter box is prone to not being put together correctly and having broken or missing parts - allowing dirt to get past the filter. The most economical solution is a 6637 filter from Riffraff. I modify the stock airbox and battery tray and make an adapter from 4” dia tubing like this.
Definitely bellowed up-pipes and 4+4 compressor wheel from Riffraff. Consider 360* thrust washer rebuild kit as PM unless there is ANY in/out play in turbo shaft - then you’ll have to rebuild it. I also crank the WG actuator all the way down and delete the red and geeen hoses. The big head is dumb.
Riffraff CAC boots, plenum inserts and upgrading the (4) clamps at plenums to ‘spider’ are an excellent plan.
DP Tuner is near the top of the list for the worst tuners. This is a bad plan. Hydra with PHP tunes is adequate for most people. Part of the reason Mark K feel the way he does about tuning affecting reliability is because of ****ty tunes like dp that have destroyed lots of good engines.
There are a few few other things we do ‘while you’re in there’ like removing the clamps from the fuel lines in the engine valley and you’re close enough to go ahead and do the $0.52 mod.
Check out the ‘7.3 Tech Folder’ above and look for my recent write-ups about 6637 filter and up-pipe install. LOTS of good info in there.
This is is a good place to see up-pipe leaks. Looking over drivers side valve cover - look for soot on the pipes below the collector. ANY soot streaks are a leak and they HURT performance.
ISSPRO EV2’s are the industry standard and that company’s reputation is literally legendary. Fuel pressure and EGT cannot be measured with OBD2, so I recommend at least these gauges.
There is no advantage to larger exhaust tubing. Straightpiped stock exhaust is fine. The stock tubing is SS and will last forever in most environments.
Definitely bellowed up-pipes and 4+4 compressor wheel from Riffraff. Consider 360* thrust washer rebuild kit as PM unless there is ANY in/out play in turbo shaft - then you’ll have to rebuild it. I also crank the WG actuator all the way down and delete the red and geeen hoses. The big head is dumb.
Riffraff CAC boots, plenum inserts and upgrading the (4) clamps at plenums to ‘spider’ are an excellent plan.
Hydra with PHP tunes is adequate for most people.
There are a few few other things we do ‘while you’re in there’ like removing the clamps from the fuel lines in the engine valley.
Check out the ‘7.3 Tech Folder’ above and look for my recent write-ups about 6637 filter and up-pipe install. LOTS of good info in there.
-bellowed uppipes (can go cheap if need to save some coin)
-riffraff 4x4 billet wheel
-plenum inserts, good boots and clamps
-6.0 trans cooler if you have an auto (sorry forgot to look before starting my reply)
-remove CAT restriction if equipped with one
-PHP Hydra
-EGT gauge (and fuel if you can swing it)
-possibly a DIY delete of the EBPV
This list is in my opinion a recipe for a happy owner.
SSJ, is there a write up on the 6637 install in the tech folder? I have wanted to share a link with people before and looked but couldn’t find one.
Like this?

https://www.ford-trucks.com/forums/1...th-extras.html
And since I’m looking...
https://www.ford-trucks.com/forums/1...lete-pics.html
https://www.ford-trucks.com/forums/1...poon-mods.html
While we’re at it.
https://www.ford-trucks.com/forums/1...sh-method.html

https://www.ford-trucks.com/forums/1...th-extras.html
And since I’m looking...
https://www.ford-trucks.com/forums/1...lete-pics.html
Neither of those are in the tech folder that I can find. I wonder if this is something that could be added as these are a couple common mods.
Otherwise I need to find another way to quickly reference them to share with folks.
Ford Trucks for Ford Truck Enthusiasts
ISSPRO EV2’s are the industry standard and that company’s reputation is literally legendary. Fuel pressure and EGT cannot be measured with OBD2, so I recommend at least these gauges.
There is no advantage to larger exhaust tubing. Straightpiped stock exhaust is fine. The stock tubing is SS and will last forever in most environments.
The stock air filter flows PLENTY and filters adequately. However, the filter box is prone to not being put together correctly and having broken or missing parts - allowing dirt to get past the filter. The most economical solution is a 6637 filter from Riffraff. I modify the stock airbox and battery tray and make an adapter from 4” dia tubing like this.
Definitely bellowed up-pipes and 4+4 compressor wheel from Riffraff. Consider 360* thrust washer rebuild kit as PM unless there is ANY in/out play in turbo shaft - then you’ll have to rebuild it. I also crank the WG actuator all the way down and delete the red and geeen hoses. The big head is dumb.
Riffraff CAC boots, plenum inserts and upgrading the (4) clamps at plenums to ‘spider’ are an excellent plan.
DP Tuner is near the top of the list for the worst tuners. This is a bad plan. Hydra with PHP tunes is adequate for most people. Part of the reason Mark K feel the way he does about tuning affecting reliability is because of ****ty tunes like dp that have destroyed lots of good engines.
There are a few few other things we do ‘while you’re in there’ like removing the clamps from the fuel lines in the engine valley and you’re close enough to go ahead and do the $0.52 mod.
Check out the ‘7.3 Tech Folder’ above and look for my recent write-ups about 6637 filter and up-pipe install. LOTS of good info in there.
Wondering what I might be missing out on....
I had (2) engine failures that showed evidence of too much timing after 100k miles of dp toons.
This is my personal opinion based on my experience.
I had (2) engine failures that showed evidence of too much timing after 100k miles of dp toons.
This is my personal opinion based on my experience.

















