Adding power. - Ford Powerstroke Diesel Forum
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post #1 of 33 Old 06-12-2013, 09:17 PM Thread Starter
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Adding power.

So I want to get some more power out of my 99. It is currently stock and it is slow....... It's not bad empty but if I'm pulling anything the truck is super slow and I have to down shift to go up any hill. I would go ahead and buy a tuner, but I am concerned that there may be a problem with the engine and that adding more fuel will just increase the problem. More specifically, the truck seems to be lacking power until 1800-2000 rpms when the turbo finally kicks in. I mean it's a freaking huge engine, shouldn't it be able to move the truck a little better?

E99 F350 crew cab dually flatbed. 2wd 6-speed. Boost and egt gauges. 6637 intake. Superchips flashpaq.

L99 F350 crew cab dually flatbed. 2wd Auto. Billet TC & aux cooler. 6637 intake. Superchips flashpaq.
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post #2 of 33 Old 06-12-2013, 09:48 PM
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Are you performimg your services on time and using a quality oil? Have you ever performed the top-side oil change? On the 7.3, it is possible to flush the HPO resovoir to ensure the injectors have good clean oil, which they need for good operation. I convinced a buddy of mine with a 97 to do it, and he said it was night and day with how the truck ran. There was less downshifting for hills and overall more power. POWERSTROKEHELP.COM - The Information Source for Ford Power Stroke Diesel Owners

Have you checked your up-pipes for leaks. There is a common leak spot at a joint where they used a donut gasket. Another buddy of mine with a 2000 complains of a loss of power after the truck has been running a while, and I can hear the exhaust leaks with out even popping the hood.

Just a couple of thoughts that would cause a lack of power

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post #3 of 33 Old 06-13-2013, 12:12 AM
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Sound like you have boost leaks. Turbo should spool up as soon as you hit the throttle. As mentioned good clean oil is a must but "flushing the HPOP reservoir is pointless as the oil circulates through it when the engine is running, it only holds enough to keep it running for a few seconds. It is the first place the LPOP feeds along with the filter and main bearings. (Dual circuit)
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post #4 of 33 Old 06-13-2013, 03:37 AM Thread Starter
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Quote:
Originally Posted by michaelaiman View Post
Are you performimg your services on time and using a quality oil? Have you ever performed the top-side oil change? On the 7.3, it is possible to flush the HPO resovoir to ensure the injectors have good clean oil, which they need for good operation. I convinced a buddy of mine with a 97 to do it, and he said it was night and day with how the truck ran. There was less downshifting for hills and overall more power. POWERSTROKEHELP.COM - The Information Source for Ford Power Stroke Diesel Owners

Have you checked your up-pipes for leaks. There is a common leak spot at a joint where they used a donut gasket. Another buddy of mine with a 2000 complains of a loss of power after the truck has been running a while, and I can hear the exhaust leaks with out even popping the hood.

Just a couple of thoughts that would cause a lack of power

Thanks for the tips. I regularly maintain all of my trucks, so servicing them isn't the issue (I think). I use rotella 15w-40 for all my diesels. I did not change out the hpop oil on the last oil change, so I will give that a try. I seriously think I have a hpop or injector problem.

I have checked for leaks, but it's hard to tell for sure. I will check out that exhaust.

E99 F350 crew cab dually flatbed. 2wd 6-speed. Boost and egt gauges. 6637 intake. Superchips flashpaq.

L99 F350 crew cab dually flatbed. 2wd Auto. Billet TC & aux cooler. 6637 intake. Superchips flashpaq.
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post #5 of 33 Old 06-13-2013, 03:43 AM Thread Starter
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Quote:
Originally Posted by hydroman View Post
Sound like you have boost leaks. Turbo should spool up as soon as you hit the throttle. As mentioned good clean oil is a must but "flushing the HPOP reservoir is pointless as the oil circulates through it when the engine is running, it only holds enough to keep it running for a few seconds. It is the first place the LPOP feeds along with the filter and main bearings. (Dual circuit)
I initially suspected a boost leak, but I have tightened all of my inter cooler boots and put a gauge on it and I can get 18-20 lbs if I push it, and from what I hear/read that's what a stock truck produces. Is it possible to have a boost leak even while producing max boost? You say it should spool up as soon as I hit the throttle? That would be nice...... I thought these 7.3's were known for their turbo lag. I don't mind doing repairs, but don't want to throw in money where it's not needed.

E99 F350 crew cab dually flatbed. 2wd 6-speed. Boost and egt gauges. 6637 intake. Superchips flashpaq.

L99 F350 crew cab dually flatbed. 2wd Auto. Billet TC & aux cooler. 6637 intake. Superchips flashpaq.
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post #6 of 33 Old 06-13-2013, 10:54 AM
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with stock tuning these things are a dog lol
you can still have leaky up pipes with max boost, i did.
up pipes are behind the turbo the run from each manifold and come up to connect to the turbo.

how many miles on the truck?


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99.5 f250 7.3 4x4 260k FF 160/30, PHP Hydra, S&B CAI, 4" Exhaust, RR Billet Wheel, Autometer Gauges, Transgo, Non-Ebpv Pedestal, High Flow Outlet, 08 Tow Mirrors.

Dad-2000 7.3 4x4 110k miles, Autometer Gauges, Superchips 1705, 6637, 4" Exhaust, BD Billet Wheel, TruCool Max
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post #7 of 33 Old 06-13-2013, 11:25 AM Thread Starter
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238k miles. I will check the up pipes this weekend.

E99 F350 crew cab dually flatbed. 2wd 6-speed. Boost and egt gauges. 6637 intake. Superchips flashpaq.

L99 F350 crew cab dually flatbed. 2wd Auto. Billet TC & aux cooler. 6637 intake. Superchips flashpaq.
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post #8 of 33 Old 06-13-2013, 01:03 PM
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ya i guarantee they are leaking at 238k miles lol
make sure everything is up to par before you get a chip.


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99.5 f250 7.3 4x4 260k FF 160/30, PHP Hydra, S&B CAI, 4" Exhaust, RR Billet Wheel, Autometer Gauges, Transgo, Non-Ebpv Pedestal, High Flow Outlet, 08 Tow Mirrors.

Dad-2000 7.3 4x4 110k miles, Autometer Gauges, Superchips 1705, 6637, 4" Exhaust, BD Billet Wheel, TruCool Max
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post #9 of 33 Old 06-13-2013, 04:28 PM Thread Starter
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So if they are leaky, what is the fix? Tighten bolts? Replace gaskets?

E99 F350 crew cab dually flatbed. 2wd 6-speed. Boost and egt gauges. 6637 intake. Superchips flashpaq.

L99 F350 crew cab dually flatbed. 2wd Auto. Billet TC & aux cooler. 6637 intake. Superchips flashpaq.
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post #10 of 33 Old 06-13-2013, 05:54 PM
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replace gaskets. they are a pain. most of the time you have to replace the pipes because they get warped and wont provide a good seal.

one way to tell they are leaking is to look at the firewall, if theirs black soot on the firewall they are definitely leaking.

now as far as performance goes,
for a cheap intake look into the DIY 6637 intake
any 4 inch exhaust works great, most are super easy to install yourself.
and if you want a chip for the truck i would recommend php, gearhead, dp tuner, and tony wildman.
this will really wake the truck up!


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99.5 f250 7.3 4x4 260k FF 160/30, PHP Hydra, S&B CAI, 4" Exhaust, RR Billet Wheel, Autometer Gauges, Transgo, Non-Ebpv Pedestal, High Flow Outlet, 08 Tow Mirrors.

Dad-2000 7.3 4x4 110k miles, Autometer Gauges, Superchips 1705, 6637, 4" Exhaust, BD Billet Wheel, TruCool Max

Last edited by blue99stroker; 06-13-2013 at 05:58 PM.
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