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Discussion Starter #1
Well tomorrow I am putting my Charger on the dyno for the first time at
Akron Horsepower. I get 3 pulls for $50. I believe 12 LXs are getting to dyno tomorrow. Really looking forward to getting a baseline on my car before I install my Sidewinder and Street heads.



What is your estimate on my pull with my current mods?
 

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I would say anywhere between 350-360 after the install, make sure to take several pics and post them up with some tips for us.
 

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Discussion Starter #3
These pulls will be without the cam and heads installed. I have the cam and am getting the heads soon but will be storing it for this winter like last winter and will be installing them next spring.

I will be taking lots of pics of install and doing a thorough write up for everyone to follow.
 

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Good look with the dyno tomorrow, let us know how you did.
 

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Discussion Starter #5
Well here is my dyno result. The temps and humidity sucked today. I only got one pull because my car ran into a small problem. When the dyno brake hit to slow the car down we saw a spark. I went under the car to inspect it, and low and behold, one of my bolts that holds the driveshaft to the rear end yoke smacked the muffler. This caused a small gouge in my muffler taking some of the stainless steel off of the muffler. So with a 4 day weekend coming up, I will be taking the muffler off and getting the gouge filled by a weld by a guy who was referred to me who does excellent work on welding stainless steel. After further inspection, looks like my exhaust system will have to go forward a bit. When I reinstall it I will be taking either a soft faced rubber hammer or rubber mallet to beat my x-pipe and cat-back system on. I remember reading in the install instructions about the exhaust expanding up to an inch rearward when it heats up.

Pics of the damage to muffler:







Here is what the instructions exactly said under notes:

All exhaust systems expand about 1" rearward when exhaust temperature rises.

Hopefully this will resolve any future dyno problems. I am just glad it did not puncture my muffler.

Here are the results:



 

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wow dude sorry to here that, send me a pm next time yuo run a dyno cause i went to a place in columbus who only charged $20 for 3 runs. Also you must of have bad temps and everything cause i got about the same mods as you minus the sc and headers, and I was runnin 309 rwhp and abd out 363 rwtq.
 

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I'd say for crappy weather and a DA up around 2000 ft (my assumption for where you are) those numbers are honest with the mods you dyno'd. Wait until fall and you should see the numbers come out around 305 to 310 with a low DA on a 50 to 60 degree dry day.

Joshua, HHP
 

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As Big D said, it really was a bummer when we saw the spark! Great idea to have someone weld the S/S muffler. It was a hot day about 88 degrees and humid. I dynoed my SRT8 last fall when it was in the 60 deg range and raining. It dynoed 368 and 375 then and 2000 miles later, it dynoed 371 and 372 but at 28 deg hotter.

I was talking to a Chrysler engineer and he stated that for the first 3000 miles, on SRT8 cars, the throttle will only open 80% because they want break in to occur without full throttle. I don't know if this is correct, but with the humidity, cars that were pulling 302 hp were pulling 282 hp etc So hotter days do make a difference. My car picked up 2 hp with hotter days. Given what it was last October, it probably would have pulled in the 380 to 385 range. Oh well, we will keep testing.

B.
 
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