JTPatriot
Well-Known Member
Okay, last update as to how and if I like the Magnuson and what I think.
As I said in the last update, Magnuson sent me an updated file and I said it was better. Well actually I really like how it drives now. Throttle is smooth with no dead pedal or light switch effect. If you give it the biscuit it will flat get up and move! In fact you have to pay attention when just driving normal and taking off from a stop easily, you will be over the speed limit very quickly and easily. My son who has a tuned '19 Challenger Scat Pac with the 392 says it feels like a 5.7 hemi when getting on it .
Highway driving up to around 70 mph is pretty good as in cruising. It seems to hold 8th pretty easy with the occasional drop into 7th on hills and such, which is expected and it did pre supercharger. Now I still feel like it does not hold 8th at anything above 75 mph like it should. It drops to 7th with any slight load, such as hills, headwinds and if you have both it will stay in 7th almost constantly. I swear it held 8th better prior to the supercharger but maybe I am wrong, but I do not think so. Is it bad? Yes and no, fuel mileage suffers when in 7th but it will move down the highway with ease and if you need to accelerate. Well just apply the pedal and away you go!
I really think at this point it may just need to be put on a dyno to see what is going on at cruising speeds on the highway. Larger tires, lower gears and the torque of the supercharger may just not be agreeing with the torque values in the transmission, so it is trying to adjust to them, I don't know, just a guess.
All in all I really like how it is running now, fine tuning can come later. Now I just need to tow the Rpod camper to see if it has helped in that area, but it is winterized and probably will not get a chance to do that until spring.
Hopefully this helps someone with there decision making. Just remember, I have 37" tires, 4.88 gears and a 3" lift so someone with stock or up to 35" may not have any of these issues I had or seen.
As I said in the last update, Magnuson sent me an updated file and I said it was better. Well actually I really like how it drives now. Throttle is smooth with no dead pedal or light switch effect. If you give it the biscuit it will flat get up and move! In fact you have to pay attention when just driving normal and taking off from a stop easily, you will be over the speed limit very quickly and easily. My son who has a tuned '19 Challenger Scat Pac with the 392 says it feels like a 5.7 hemi when getting on it .
Highway driving up to around 70 mph is pretty good as in cruising. It seems to hold 8th pretty easy with the occasional drop into 7th on hills and such, which is expected and it did pre supercharger. Now I still feel like it does not hold 8th at anything above 75 mph like it should. It drops to 7th with any slight load, such as hills, headwinds and if you have both it will stay in 7th almost constantly. I swear it held 8th better prior to the supercharger but maybe I am wrong, but I do not think so. Is it bad? Yes and no, fuel mileage suffers when in 7th but it will move down the highway with ease and if you need to accelerate. Well just apply the pedal and away you go!
I really think at this point it may just need to be put on a dyno to see what is going on at cruising speeds on the highway. Larger tires, lower gears and the torque of the supercharger may just not be agreeing with the torque values in the transmission, so it is trying to adjust to them, I don't know, just a guess.
All in all I really like how it is running now, fine tuning can come later. Now I just need to tow the Rpod camper to see if it has helped in that area, but it is winterized and probably will not get a chance to do that until spring.
Hopefully this helps someone with there decision making. Just remember, I have 37" tires, 4.88 gears and a 3" lift so someone with stock or up to 35" may not have any of these issues I had or seen.
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