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I know there are many factors that can effect the result but I am curious what those of you who've seen a number of these think about this one. I did't think torque would be so high but hoped hp would be more.
The drag strip will open in 2 weeks and I will report on times vs. last year prior to mods.
Your tq numbers are good. I would have thought it would hit 480hp. Did you delete primary cats with your headers?
Also your peak HP is at 5.5k rpms your leaving some on the table. Most rise till close or at 6k
It's one of 2 things IMO
Belt slip
A/f ratio-past 5.5k you drop down to the lower 11 range. You would probably make more power at 11.6- 11.8
Your tq numbers are good. I would have thought it would hit 480hp. Did you delete primary cats with your headers?
Also your peak HP is at 5.5k rpms your leaving some on the table. Most rise till close or at 6k
It's one of 2 things IMO
Belt slip
A/f ratio-past 5.5k you drop down to the lower 11 range. You would probably make more power at 11.6- 11.8
I would've thought 480 would be in range too. I don't know anyone locally that dyno tunes to make adjustments. Anyway to check or see belt slipping?
The numbers look strong for the upgrades. Which headers do you have? Long Tube, mid length? Adding a larger throttle body, a SC pulley, BWK and of course cooling upgrades will raise the power gains significantly.
i agre should be more in the 480whp range on 168 pulley on dynojet... i dynoed 505whp when i was on 172 pulley on dynojet and 527whp on 180 pulley on same dyno
Short headers and some custom pipes to the 2nd cats. I'm thinking about cutouts before the 2nd cats. Would there be hp/tq gain or loss when running them open?
The ones I've seen are usually just before the mufflers.
Was your tune for your current mods after they were done. Your exhaust is fine and is quite common. I plan on the same. Who did your tune? If I were u I would email them your dyno and see what they think.
Was your tune for your current mods after they were done. Your exhaust is fine and is quite common. I plan on the same. Who did your tune? If I were u I would email them your dyno and see what they think.
Kleemann, before header install. I don't think their is a "re-tune". I do need to go back to have check engine light shut off.
also leave the second cats and take out the res. that thing is soo heavey and makes car way too quiet.
That was the very 1st mod I had done. I went to the track yesterday and ran 12.51 @ 112.98 at a mile high on mediocre street tires.. Most fast cars were 13-14, some low 12's. 1st race against Hellcat was my 12.6 to his 13.8. He must just be spinning. I saw it do several runs 13-14's. I was pleased and wonder what drag tires and some practice might do.
I agree with the retune. When you remove primary cats you will really gain with a tune. IMO the only headers that you don't need a retune with are shortys. But even then it will help some
I agree with the retune. When you remove primary cats you will really gain with a tune. IMO the only headers that you don't need a retune with are shortys. But even then it will help some
I'll ask them about it when I get back down to see them.
03-31-2016, 12:47 PM
