whats the best tuner for an 03 hemi?
#1
whats the best tuner for an 03 hemi?
so Ive been reading that the 03 is kind of the "bastard child" when it comes to tuning options. I was just wondering what my options are. It seems as though SCT wont cover an 03. Which kind of leaves me with superchips or the diablo predator. All I really want to do is disable some of the torque management and adjust some of the WOT shift points. An economy tune and a performance tune would be nice. Also, is it true that 03's are supposed to run mid grade fuel from the factory? I didnt see anywhere the gas cap or anything that said that so the first time I filled it up I put 87 in it. It seems to run just fine, but I'd like to know for sure.
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Join Date: Jul 2007
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You can get some decent gains with a Superchips, nothing like it does for the 5.9, or the '04 & newer Hemis though.
First thing I'd do if I had an '03 Hemi is the TMR mod. It's basically the one thing a tuner does to firm up the tranny shifts on the '04s and newer anyway.
If you start to get into power adders, think VERY SERIOUSLY about upgrading the valve springs, the '03 and very early '04s used a considerably weaker spring...
First thing I'd do if I had an '03 Hemi is the TMR mod. It's basically the one thing a tuner does to firm up the tranny shifts on the '04s and newer anyway.
If you start to get into power adders, think VERY SERIOUSLY about upgrading the valve springs, the '03 and very early '04s used a considerably weaker spring...
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Lot of stock '03s snap a spring once they see 80k+ on them. Just hate to see someone snap a spring and have it take a cylinder out to lunch. The '04.5 5.7 springs or even the stouter 6.1 springs are cheap enough, even from the dealer.
TMR mod removes torque management, very common mod for the '03s, it's also commonly called "TMR Delete".
https://dodgeforum.com/forum/3rd-gen...elete-mod.html
TMR mod removes torque management, very common mod for the '03s, it's also commonly called "TMR Delete".
https://dodgeforum.com/forum/3rd-gen...elete-mod.html
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Lot of stock '03s snap a spring once they see 80k+ on them. Just hate to see someone snap a spring and have it take a cylinder out to lunch. The '04.5 5.7 springs or even the stouter 6.1 springs are cheap enough, even from the dealer.
TMR mod removes torque management, very common mod for the '03s, it's also commonly called "TMR Delete".
https://dodgeforum.com/forum/3rd-gen...elete-mod.html
TMR mod removes torque management, very common mod for the '03s, it's also commonly called "TMR Delete".
https://dodgeforum.com/forum/3rd-gen...elete-mod.html
On the tranny or where?
Thanks