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Hello, I have a 2013 and a 2015 Pinnacle CXU 613 and they are both rated as 415C on the engine plate. We haul heavy and I've noticed that there are MP8's with 505C on the engine tag. I'm wondering what the most practical option is for getting more HP since it would be very useful with our logs and logging equipment that we haul. I would prefer getting them to 505 but I think I have heard or read that you need to change cams and injectors to get into that category. These trucks have the original emmisions intact and I prefer to keep it that way. I did hear that there are tunes that will burn better and be less trouble for the emmisions system. I'd be interested in that as well. If there is anyone that could get me started down the right track I'd appreciate it. Lots of voices out there. Experience is better than opinion in my book. Thanks! 

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Tuners on these trucks are not very reliable at all, so I wouldn't advise you to go that route. I don't know if the cams/injectors are different between the ratings, but I do know the "right" way to accomplish an uprate would be expensive (and maybe impossible) to accomplish through Mack's channels. I'm think I remember seeing a notice that Mack would no longer send out uprate updates for whatever reason. Maybe others will have better information than me, all I have to go off of is what the dealerships will regurgitate. 

Thanks for the reply Heinz, it confirms some of my thoughts on dealership ability to help with power uprates. Are all dealers in the same box, so to speak?

Are there any others out there with knowledge or experience on power ugrades on a full emissions MP8? 

I searched my old emails and found a case where someone ordering a new truck wanted to up the HP after it left the factory. Our foreman had this to say, and he wasn't trying to turn away the work: "As emissions standards get tighter and tighter our ability to do HP increases is limited. It is decided on a case by case basis. I’ll let you know what happens next week. If they do allow an increase it is usually a charge of between $2000-$3000 for a software change."

I think the high charge would make us a little shy. We've checked with our local Vomac dealer three times in a 3 year period and the answer is always the same. Can't do it. Was wondering if Mackpro would be able to help out with something like that at his location or had some advice. I think I read on an older thread that he has done some of it in the past. 

  • 2 weeks later...
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Best I remember A few years back Mack sent out a bulletin saying that they were quitting doing HP upgrades for trucks older than 10 years old. They ended up back tracking on that and are still doing HP software upgrades on trucks as far back as 1999. However there are limits on certain years such as no more 2005 AI 460 programs as the EPA allowed only so many units at this power/pollution level for that year. This seems to affect mostly mid-2000 year models especially the 370 AI engine. As far as MP engines go , all HP upgrades are software only, no hard parts. As far as the MP8, 2008-2009 max power was 485 HP, the 505 HP didn’t start till 2010 or possibly 2013. The limiting factor is the transmission. A Mack manual or M-drive can go all the way up the 505PLUS . Allison trans were limited to 445/455 HP in some certain trucks till about 2023. Fuller manuals is where it really sucks as they go by the model number of the transmission. A 1400 series transmission is limited to engine HP rating of 1400 foot pounds of torque, 1600 series is 1600 foot pounds of torque. So if you got a Fuller to get the bigger 505 programs you need the 1800 series Fuller trans before Mack will turn the download on. This is done at the corporate level , the dealership can only do what corporate approves /turns on. For the smaller Fuller trans guys , there is a 505E program that gets you to 505HP but only has 1600 foot pounds of torque. Cost is usually pretty cheap as Corporate doesn’t charge the dealership very much for the software change however the dealerships sometimes really mark the price up. I’ve seen 505 HP update done at dealerships in the $500-700 price range. However if your truck is fairly new and under warranty or has extended Mack warranty expect the price to be  $3000-4000. 

Thanks Mackpro! Exactly what I wanted to know. I have the eaton fuller 13 speed trans in these 2 trucks. 1 is a 2013 and 1 is a 2015. Could I get connected with you or someone that you know does this?

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