What a difference!
Posting Guru
Joined: Dec 2003
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From: South Texas Coast
The percieved HP increase is usually less than the advertised HP increase. Of course we all know that chipmakers would never over state the effectivness of their product. 
As mods go starting with gauges is not a bad idea.
The Exhaust Mod with downpipe replacement will give you a little more responsive throttle, put a smile on your face, and actually help your truck operate more efficiently all at the same time.
As mods go starting with gauges is not a bad idea.
The Exhaust Mod with downpipe replacement will give you a little more responsive throttle, put a smile on your face, and actually help your truck operate more efficiently all at the same time.
Last edited by Phydeaux88; Oct 3, 2006 at 09:57 PM.
Senior User
Joined: Oct 2004
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Excuse Me, I Guess I'am Human!!!!!!!!!!!
BAYLIFF WACK MY YOU KNOW WHAT. ITFOX MADE THE INJECTOR COMMENT, YOU CAN TAR AND FEATHER ME. JCAB
Originally Posted by Phydeaux88
I said nothing about bigger injectors or anything past chipping.
What I said was if you want to chip do it right.
See Below:
The idea is to avoid spending money to repair your truck when the repairs could have been avoided by some minor mods.
What I said was if you want to chip do it right.
See Below:
The idea is to avoid spending money to repair your truck when the repairs could have been avoided by some minor mods.
Fleet Mechanic
Joined: Oct 2003
Posts: 1,764
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From: CentralEastern Utah
Originally Posted by true
I am a little disappointed. I used to have a 2002 PSD and it had a great deal more power. It was equipped the same except it had 3:73's and it pulled much better than this 97 does. What do I need to do to get the power to be comparable to the 2002's?
Posting Guru
Joined: Apr 2004
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From: AZ
"What do I need to do to get the power to be comparable to the 2002's?"
ltfox you are correct, bigger injectors are the only way to keep up with the superdutys. Our stock 94-97 psd injectors are ~100cc, the 99+ superduty have ~130cc injectors. A chip can only take your stock injectored motor to a certain level around 220hp (and it still falls short or a stock superduty). The superduty can make up to 300 hp with its injectors and some programming. The only can of worns you would open would be that you will keep wanting more power from your motor, ie pms.
ltfox you are correct, bigger injectors are the only way to keep up with the superdutys. Our stock 94-97 psd injectors are ~100cc, the 99+ superduty have ~130cc injectors. A chip can only take your stock injectored motor to a certain level around 220hp (and it still falls short or a stock superduty). The superduty can make up to 300 hp with its injectors and some programming. The only can of worns you would open would be that you will keep wanting more power from your motor, ie pms.
Elder User
Joined: Aug 2006
Posts: 674
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From: KC, MO
some questions after reading the posts:
1. What size is stock on DP and the rest of the exhuast
2. would it make a difference if the exhaust was split at where the muffler is located.
Reason's for asking:
I was just given what looks to be a 3 to 3.5" pipes from a dodge cummins that looks like the same size of the exhaust on mine. I know I probably can't use the DP but the rest of the straight pipe has a pipe to go all the way back and splits at the muffler location. I even think it fits over the axles correctly.
So, the new mod would delete my cat and big bulky muff. (Ha ha) and give me a split at the muffler location.
3. I did the DIY Tymar intake mod and I don't notice a big difference in noise. Does this help performance? I didn't notice a huge difference.
4. Also, once and a while, (twice a month), my tranny will not shift from first to second under acceleration. I have to let off of it for a second to get it to shift.
Is this common or would you recommend an immediate fluid replacement and filter kit from the local auto supply store or an upgrade from some aftermarket guy?
I also was considering synthetic fluid. What did it cost you do to it?
Sorry for all the questions combined into one thread.
thanks for the help.
Flea
1. What size is stock on DP and the rest of the exhuast
2. would it make a difference if the exhaust was split at where the muffler is located.
Reason's for asking:
I was just given what looks to be a 3 to 3.5" pipes from a dodge cummins that looks like the same size of the exhaust on mine. I know I probably can't use the DP but the rest of the straight pipe has a pipe to go all the way back and splits at the muffler location. I even think it fits over the axles correctly.
So, the new mod would delete my cat and big bulky muff. (Ha ha) and give me a split at the muffler location.
3. I did the DIY Tymar intake mod and I don't notice a big difference in noise. Does this help performance? I didn't notice a huge difference.
4. Also, once and a while, (twice a month), my tranny will not shift from first to second under acceleration. I have to let off of it for a second to get it to shift.
Is this common or would you recommend an immediate fluid replacement and filter kit from the local auto supply store or an upgrade from some aftermarket guy?
I also was considering synthetic fluid. What did it cost you do to it?
Sorry for all the questions combined into one thread.
thanks for the help.
Flea
Posting Guru
Joined: Apr 2004
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From: AZ
Flea I can answer a couple of your questions
1) the stock down pipe is not round in diameter, it is a flattened pipe used for the tight fit between the firewall.
2) The stock exhaust has a 3.5 inch diameter, but it is flattened at the bends. I think the basic fitment of the duals would work but you will have trouble mounting it up to stock locations.
3) This filter does offer better airflow to your engine but the biggest advantage from this setup is its filtering ability, and it creates a much better seal than the factory box.
4)
1) the stock down pipe is not round in diameter, it is a flattened pipe used for the tight fit between the firewall.
2) The stock exhaust has a 3.5 inch diameter, but it is flattened at the bends. I think the basic fitment of the duals would work but you will have trouble mounting it up to stock locations.
3) This filter does offer better airflow to your engine but the biggest advantage from this setup is its filtering ability, and it creates a much better seal than the factory box.
4)
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Elder User
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From: Huntsville, Alabama
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Fleet Mechanic
Joined: Oct 2003
Posts: 1,764
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From: CentralEastern Utah
http://www.drivetrain.com/downpipeinstinstr.html
Check out this link on downpipe install.....very good with pics.
Check out this link on downpipe install.....very good with pics.
Elder User
Joined: Oct 2005
Posts: 597
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From: West Palm Beach, Florida
Just a thought. Do a 2" body lift first. Makes it easy.
Originally Posted by true blue
How do you get an after-market down pipe in? It looks like there is no room at all.
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Elder User
Joined: Mar 2002
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From: Huntsville, Alabama
Originally Posted by ltfox
http://www.drivetrain.com/downpipeinstinstr.html
Check out this link on downpipe install.....very good with pics.
Check out this link on downpipe install.....very good with pics.
Senior User
Joined: Oct 2004
Posts: 404
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Pm sent to you
f350 hauler, I sent you a pm. I hope you got it. Jcab
Originally Posted by F350_Hauler
It was pretty easy to install a 2" Performance Accessory body lift and then there was plenty of room for the new downpipe. We did it to my son's truck and now I want to do it to my new truck, too. I'll have to wait a while for that, though. The body lift kit is cheap. I think I got his for $115 delivered. I will start watching for that on e-bay. It takes a full day to do the lift and the exhaust work but it is oh so worth it.
Posting Guru
Joined: Dec 2003
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From: South Texas Coast
Originally Posted by true blue
How do you get an after-market down pipe in? It looks like there is no room at all.
Next go to 4 inch for the rest of the system.
Originally Posted by true blue
Nice install instructions. Is a down pipe really worth the effort?
Originally Posted by Flea
3. I did the DIY Tymar intake mod and I don't notice a big difference in noise. Does this help performance? I didn't notice a huge difference.
Last edited by Phydeaux88; Oct 5, 2006 at 11:39 PM.
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