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Old Tue, April 27th, 2010, 05:22 PM
ltr450 ltr450 is offline
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Join Date: Apr 2010
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Default 7.3 PSD Tune Questions

I did not see this section the other day so I thought I would re-post it here.

I have an Evolution II on my truck right now. I want to upgrade to Gryphon. My questions are about what tunes to order, specifically towing tunes. I have a 2001 7.3 with a 4" MBRP exhaust and Tymar intake. I tow several different trailers, but the one I tow most often is a 34 foot toy hauler. The trailer is about 9000 lbs empty. I figure fully loaded with 3 ATV's in the back, I am between 12000 and 15000 lbs. Which towing tune do I need? I usually tow it in the #1 tune on the EVO. The other day, I forgot to switch from #2 tune and headed out to Arkansas. The truck pulled much better and I only had to back out of the throttle a few times in the mountains due to EGT's. I obviously want as much towing power as possible, without worrying about EGT's. I normally would never tow in #2, but like I said, I forgot and it towed much better. Also, am I correct on the pricing? $25 for the conversion and $30 per tune or do I need custom tunes? What is the turn around time on the conversion? Any help would be greatly appreciated.

When I use the Edge towing (#1, 40hp I believe) tune, I can't tell much difference over stock. In the #2 program (I believe it is 60hp) it tows really good. Has anyone towed this much weight with the 40 or 65 hp towing tune from Bill? I am afraid that the 25 hp towing tune will not give me enough extra to be worth the money spent. I know EGT's are the limiting factor so I am interested in opinions from anyone whose truck is similarly equipped.

Thanks in advance.
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