7.3l Quest
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7.3l Quest
I have a early 7.3 7/98 f-350 4 door long bed. It sounds like I got bad year for a truck to make some good power.I'm new on the fourm.I wish the truck didn't have such a turbo lag. I have a built tranny Stage III, big air intack, 4in free flow from the turbo back,super chip programer.Wan't to have lots of power don't Know if I should sell Mine and start over. Please help. 
Post Fiend
Joined: Nov 2007
Posts: 9,549
Likes: 14
From: Payson, AZ
13 months ago my early 99 was bone stock. Early 99's have a smaller turbo, but should not have much lag, smaller injectors (AB codes), 110 Volt IDM and a 15° HPOP. All this can be over come. The biggest power increase mod I have is the DP Tuner. Next best power mod was the new larger turbo. Come next spring I hope to have new injectors, 17° HPOP, PMT PCM and 120V IDM. The early 99 can be updated to a 99.5-03. Don't get discouraged. If you have a good motor you just need the right mods.
As for the turbo lag you need to make sure the turbo is in good shape.
As for the turbo lag you need to make sure the turbo is in good shape.
Post Fiend
Joined: Nov 2007
Posts: 9,549
Likes: 14
From: Payson, AZ
Beans has a drop-in turbo upgrade for the early 99. LINK This would be the easiest and most cost effective way to go. The reason I didn't go that route was the price I got all my upgrade parts for.
Injectors - $1500-$2500+, 17° HPOP $350-$400, PCM $100-$200. You can modify your IDM for up to 140V.
The disparity on prices is whether you get used, reman, or new. If you find a good deal you can beat the low prices.
If you are getting 19MPG the motor is probaly pretty sound.
Hopefully someone will chme in who has seen some good prices or may have what you need.
Post Fiend
Joined: Nov 2007
Posts: 9,549
Likes: 14
From: Payson, AZ
Beans has a drop-in turbo upgrade for the early 99. LINK The reason I didn't go that route was the price I got all my upgrade parts for.
Injectors - $1500-$2500+, 17° HPOP $350-$400, PCM $100-$200. You can modify your IDM for up to 140V.
The disparity on prices is whether you get used, reman, or new. If you find a good deal you can beat the low prices.
If you are getting 19MPG the motor is probaly pretty sound.
Hopefully someone will chme in who has seen some good prices or may have what you need.
Post Fiend
Joined: Jun 2006
Posts: 9,714
Likes: 2
From: White Mnt's,New Hampshire
if i was to do this again and started with a bone stock truck...i would get this kit..im sure they will upgrade the injectors to stage 2's if you ask them..it may raise the price a little though..
Outlaw Diesel Performance :: Online Store
and top it off with a D66 turbo
Beans Diesel Performance - Early 1999 Power Stroke BDP Dominator 66 Turbo (Powered by CubeCart)
i have the resistor to turn your 110 IDM into a 140..if you PM me your address ill send you one....
Outlaw Diesel Performance :: Online Store
and top it off with a D66 turbo
Beans Diesel Performance - Early 1999 Power Stroke BDP Dominator 66 Turbo (Powered by CubeCart)
i have the resistor to turn your 110 IDM into a 140..if you PM me your address ill send you one....
Post Fiend
Joined: Sep 2006
Posts: 5,584
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From: Millbrook Alabama
To upgrade to a larger turbo you will need of course the turbo ($750-$20000) plus a 99.5+ pedestal ($100-$150), 99.5+ Spider ($???), 99.5+ 3" intake Plenums ($???), 3" spider to plenum boots ($25-$50), 4" turbo intake tube and up-pipes (bellowed up-pipes $350). I was fortunate and got it all used from a member of FTE. LINK to my Turbo upgrade.
Beans has a drop-in turbo upgrade for the early 99. LINK This would be the easiest and most cost effective way to go. The reason I didn't go that route was the price I got all my upgrade parts for.
Injectors - $1500-$2500+, 17° HPOP $350-$400, PCM $100-$200. You can modify your IDM for up to 140V.
The disparity on prices is whether you get used, reman, or new. If you find a good deal you can beat the low prices.
If you are getting 19MPG the motor is probaly pretty sound.
Hopefully someone will chme in who has seen some good prices or may have what you need.
Beans has a drop-in turbo upgrade for the early 99. LINK This would be the easiest and most cost effective way to go. The reason I didn't go that route was the price I got all my upgrade parts for.
Injectors - $1500-$2500+, 17° HPOP $350-$400, PCM $100-$200. You can modify your IDM for up to 140V.
The disparity on prices is whether you get used, reman, or new. If you find a good deal you can beat the low prices.
If you are getting 19MPG the motor is probaly pretty sound.
Hopefully someone will chme in who has seen some good prices or may have what you need.
Used parts all the above can be done for $2000, pelnums, spider,hpop,turbo, boots, up-pipes, babies butt.etc.) Inectors are the big expense, at $1600 and up. When you do decide to do the HPOP order a modded 17* from terminator. About $650.
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Post Fiend
Joined: Nov 2007
Posts: 9,549
Likes: 14
From: Payson, AZ
Just what is involved in Terminator Engineering's modding of the HPOP to make it better then a Bosch or Delphi stocker.
Post Fiend
Joined: Sep 2006
Posts: 5,584
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From: Millbrook Alabama
Robin, my understanding is that Joey takes a stock 17* NEW Hpop, and messes with the interals to be = to what a 21* hpop would be, if there was one.
Post Fiend
Joined: Nov 2007
Posts: 9,549
Likes: 14
From: Payson, AZ
Sounds like a swash plate mod. I have read that a 17° is about 30% more efficient then a 15°. An HPOP that was like a 21° would be all I would ever need. Forged rods or not I don't want more than about 375 to 380 RWHP. Got a ways to go but I'll get there.
