I need some tuner education - Ford Powerstroke Diesel Forum
6.7 Performance Parts Discussion 6.7 Performance Parts Discussion

 
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post #1 of 10 Old 04-03-2011, 02:17 AM Thread Starter
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I need some tuner education

My '03 Duramax has a Quadzilla which I run at the +90 hp setting. Stock was 300 - So 390 HP is enough to make the truck run 0-60 in 6.9 seconds. Why is it that a stock 400 HP Powerstroke runs 9.0 seconds 0-60? How much power would I need to add to my new 6.7 to get around 6.5 - 7.0 second 0-60 performance? My main goal in adding a tuner would be to improve fuel economy but I don't really want to be going backwards in the power department. Can I retain the quiet sound of the stock 6.7 if I do the deletes and add a muffler?

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post #2 of 10 Old 04-04-2011, 10:16 AM
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Originally Posted by 4x4ord View Post
My '03 Duramax has a Quadzilla which I run at the +90 hp setting. Stock was 300 - So 390 HP is enough to make the truck run 0-60 in 6.9 seconds. Why is it that a stock 400 HP Powerstroke runs 9.0 seconds 0-60? How much power would I need to add to my new 6.7 to get around 6.5 - 7.0 second 0-60 performance? My main goal in adding a tuner would be to improve fuel economy but I don't really want to be going backwards in the power department. Can I retain the quiet sound of the stock 6.7 if I do the deletes and add a muffler?
Not sure about your 0-60 questions, we have never tested that on a 6.7. However, you will not go backwards in the power department by adding a tuner. You will gain about 150RWHP. It will also give you about 2-4 more MPG depending on how you drive the truck. The truck will get a little louder once you straight pipe it, but a muffler will help keep the noise down. No muffler can get pretty loud on these straight piped 6.7's. Let us know if you have any questions or if we can help with anything. Thanks

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post #3 of 10 Old 04-05-2011, 03:27 AM Thread Starter
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I suppose most of that 2-4 mpg gain is coming from deleting the Cat, is it?

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post #4 of 10 Old 04-05-2011, 06:26 AM
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Tuner help

4x4ord, I went and did the Bully Dog Gt tuner and the MP-8 stacked with it .It pulls realy hard and is as fast or faster than my '09 Duramax that had more done to it. The best part is no emmission's stuff was removed to obtain this and it's still as quiet as stock sans the Afe stage 2 air kit that is on it which Imo sound great and i have not had any problems or check engie lights so far either.As far as milage goes i was getting 17 before and now it's 17.8-18.2.My truck is a cc sb king ranch with 3:55 gears,it also has a Tranfer Flow 50 gal aux fuel tank in the bed for the long haul.That set up full of fuel weighs around 500 lbs, and it does'nt affect it at all.
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post #5 of 10 Old 04-05-2011, 07:08 AM Thread Starter
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Thanks, I am thinking I will end up keeping my stock exhaust as well. I took the transmission out of my Duramax and blame it party on the Quadzilla so I am leaning toward an engine / transmission tune. Sounds like Spartan is working on one as well as H&S - Is your set up strictly engine? It could very well be that this new 6R140 can take all we want to throw at it anyway but I'd rather be safe than sorry. Does that Transfer Flow tank mount under the bed?

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post #6 of 10 Old 04-05-2011, 08:25 AM
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tuner help

Yes set up is strikly engine.Tranny is no different from stock it shift's the same maybe a little more stout but thats it.The transfer flow that i have mounts in the bed,so total fuel is 78 gals!I have gotten 1300 miles empty not towing before fill ups.Towing should be @900 gals before fill up.
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post #7 of 10 Old 04-06-2011, 11:22 PM
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Spartan is going to hold your transmission better then the H&S (flame suit on) according to Matt from spartan these 6R140's are pretty easy to smoke if there not tuned properly, and as far as I know H&S doesnt even have TCM tunes for the 6.7 yet. Your duramax is probably faster because an equivalent 2011 superduty weights about 800 lbs heavier then your 2003, you also have to take gearing into account, as well as the fact your shift points and lockup could have been adjusted by the quad. hope that helps.

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post #8 of 10 Old 04-07-2011, 08:07 AM
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We have not seen any trans failures on the 6.7L yet. The trans is not tuned right now, but will be in the future. The tuning is more than safe, if you use common sense.



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post #9 of 10 Old 04-08-2011, 07:01 AM
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We have yet to have a single issue with the transmission on any of our tuned trucks. Transmission tuning is in the final stages of development, and will not be long until it is available. I don't think anyone can definitively state which one is better until they are compared head to head. Time will definitely tell, but right now our tuning is working very well with little to no issues.

-H&S
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post #10 of 10 Old 04-08-2011, 12:25 PM
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[QUOTE=H&S Performance;2441983]We have yet to have a single issue with the transmission on any of our tuned trucks. Transmission tuning is in the final stages of development, and will not be long until it is available. I don't think anyone can definitively state which one is better until they are compared head to head. Time will definitely tell, but right now our tuning is working very well with little to no issues.

-H&S[/QUOTE


Ford F250 6.4 CC/SB, Spartan 350 w/TCM, Mag-Hytec deep pan, Flo-Pro 5 inch Exhaust, AFE stage 2 with ProDRy, 2.5 Readylift, ZEX Nitrous single stage, BD CAC pipe, ATS 5-star converter, elite egr delete/wastegate, ts mp-8 stacked, Procomp traction bars, locker, CFM plenum, ARP studs. Innovative tunes and Suncoast on the way!
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