I went out to Vegas 2 weekends ago to tune a 2005 LS2 SSR Automatic with a 112 MagnaCharger at 6.5 psi of boost. The SSR has Kooks 1 7/8" Headers and the same dual 3" exhaust as my TBSS.
Leading Edge Performance installed their MagnaCharger Cam, Springs and Pushrods on Thursday and I got there Friday evening for the tuning.
The SSR made 431RWHP and 421RWTQ before the cam install on 10/1/08 fresh off the street with 91 octane fuel and 6.5 psi of boost on a conservative tune.
We started tuning and upped the boost to 7.5 psi. When we finished tuning on Friday Night we were just over 486RWHP but the stock Transmission and Converter were getting real hot. We came back in the morning and warmed it up to operating temp on the dyno and made another pull without any further tuning and made 499RWHP and 481RWTQ.
We wanted to push it out a little further so we added 5 gallons of 100 octane to 1/4 tank of 91 and pulled it 2 more times adding timing and got 515RWHP and 485RWTQ.
SAE Numbers
494.22 WHP
476.78 WT
509.72 WHP
480.46 WT
This was done in Vegas at over 2000 feet of elevation. That is a loss of 1 psi of boost when compared to a run done at sea level with the exact same combination.
__________________ http://www.leftcoast32.com
'07 TrailBlazer SS LSX390 "TVS2300" 18.5 psi
1015 HP and 936 TQ at 6400 RPM's Authorized MagnaCharger Dealer/Distributor
My SSR: '04 Purple (Penelope)#3438 1st '04 Production UV and '06 blue over silver auto, #22851 #5 0f 32
Joe...is this "R" owned by a Fanatic?
__________________
" Isn't it great to live in a society where the penalty for lying to a congressman can be up to 30 years in jail, but the penalty for a congressman lying to you is another two years in office. "
__________________ http://www.leftcoast32.com
'07 TrailBlazer SS LSX390 "TVS2300" 18.5 psi
1015 HP and 936 TQ at 6400 RPM's Authorized MagnaCharger Dealer/Distributor
Joe,thanks for posting those results. The sound change of the car is great,but the seat of the pants feel for the Lep cam change and your tune is awesome.When you drive thru a drive -in now, people really know this is something other than pretty.Many thanks to you and Garth @Lep to make this truck way more fun to drive. Great combination .
My SSR: 05 Aqua Blur Auto, Magnacharger, Forged rods and pistons, Kooks headers and cats, Corsa, 410 gears
How come I can get only 455 RHP out of mine and I have a couple more improvements? Is it the 4.10 gears that give lower results and or the stall converter?
How come I can get only 455 RHP out of mine and I have a couple more improvements? Is it the 4.10 gears that give lower results and or the stall converter?
Do you have an aftermarket blower cam installed? Looking at what you've done, the only things that will substantially affect RWHP are the 'Charger, throttle body and headers.
It also depends on the type of dyno, elevation from sea level, type of tune, ambient temperature, etc. You might be producing more HP than you think.....
Gears and convertor will effect dyno #'s a little bit. Engine combination is important also (compression ratio/heads/etc). A great tune also helps, if you don't have one?
I have the 410 gears.What is important is the differance in the before & after cam & tune change on the same day. Changes in temp,press,dyno settings will change outcome.Eight months previous,we did a Joe & Garth tune on the same dyno & got 453 hp without the cam. Look at the final diff with Lep cam & Joes tune. It will probably add another 20 hp with 110 octane & a new tune to allow much more timing.Then I can crank up the boost & start replacing Rearend ,Trans,etc. Well ,I guess that is next because the price of fun cost. Man ,I love the fun factor
I have the 410 gears.What is important is the differance in the before & after cam & tune change on the same day. Changes in temp,press,dyno settings will change outcome.Eight months previous,we did a Joe & Garth tune on the same dyno & got 453 hp without the cam. Look at the final diff with Lep cam & Joes tune. It will probably add another 20 hp with 110 octane & a new tune to allow much more timing.Then I can crank up the boost & start replacing Rearend ,Trans,etc. Well ,I guess that is next because the price of fun cost. Man ,I love the fun factor
Garth, you are a trouble maker. Looks like i will eventually get into trouble. Lets recap, 50 shot of Nos, New transmission, new converter,new rear end,
new drive line,; Heck , I will have enough money for all of this ,just soon as I get a job .......nah , dont want a job
Garth, you are a trouble maker. Looks like i will eventually get into trouble. Lets recap, 50 shot of Nos, New transmission, new converter,new rear end,
new drive line,; Heck , I will have enough money for all of this ,just soon as I get a job .......nah , dont want a job
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