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Lightly modded LS3 hits 400 + RWHP

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Old 05-28-2010, 12:04 PM
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Default Lightly modded LS3 hits 400 + RWHP
Took the car back down to Straightline's Mustang dyno to see what I picked up with these mods :
Kooks 1 7/8" longtube headers & hi flow cats
SLP Loudmouth II
Rotofab CAI

Car is still running the OEM tune...until the cam goes in it.
Results : 422 rwhp/406 rwtq
Weather corrected results.

Graph showing stock baseline over mods.

On the rollers.
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Old 05-28-2010, 12:29 PM
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Impressive, nice powerband 2. Makes want to start modding.....How much total did you spend in mods?
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Old 05-28-2010, 12:49 PM
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Originally Posted by 99CamVanillaTop
Impressive, nice powerband 2. Makes want to start modding.....How much total did you spend in mods?

I did all the work myself, so no cash outlay there....the headers & cats were $1300, plus another $850 for the CAI & Exhaust.

So we'll just say $2,500
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Old 05-28-2010, 01:15 PM
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420 hp through cats....not bad my man. Not bad.
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Old 05-28-2010, 02:05 PM
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Originally Posted by Huggerorange73
I did all the work myself, so no cash outlay there....the headers & cats were $1300, plus another $850 for the CAI & Exhaust.

So we'll just say $2,500
Dang, power to ya, I dont plan on modding mine for a minute unless I find deals on used parts.........

What is the biggest LS3 / 5th gen camaro forums that I should join for all my noob questions?
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Old 05-28-2010, 02:21 PM
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That's cam-only LS1 territory. Very nice. Time to take it to the track.

Originally Posted by 99CamVanillaTop
What is the biggest LS3 / 5th gen camaro forums that I should join for all my noob questions?
http://www.moderncamaro.com/forum/in...eferrerid=1744
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Old 05-28-2010, 02:27 PM
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Untuned + mustang dyno + CATS = VERY NICE

Congrats.
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Old 05-28-2010, 11:23 PM
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dude this makes me want to order that exhaust system from TSP and get a CAI...SO BADDD

I got to save a little before I can dump any money into it.

im excited.
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Old 05-29-2010, 06:07 PM
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Mine made a little more but w/a tune,SLP Pully and stock mufflers 430rwhp/431rwtq
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Old 05-31-2010, 01:00 PM
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u guys arent using the 160 themostat
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Old 05-31-2010, 01:06 PM
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Sweet numbers man, keep us posted and let us know what kind of time she's runnin.
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Old 05-31-2010, 02:26 PM
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Originally Posted by blk/slvr02ss
Mine made a little more but w/a tune,SLP Pully and stock mufflers 430rwhp/431rwtq
I know I'm leaving some HP on the table without a tune, but a cam upgrade is right around the corner, so it's pointelss to tune it now.

Originally Posted by bigshotls1
u guys arent using the 160 themostat
Mine's on the E|OEM stat.

Originally Posted by Lethal Z
Sweet numbers man, keep us posted and let us know what kind of time she's runnin.
Will do!
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Old 06-11-2010, 08:00 PM
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Originally Posted by Huggerorange73
Took the car back down to Straightline's Mustang dyno to see what I picked up with these mods :
Kooks 1 7/8" longtube headers & hi flow cats
SLP Loudmouth II
Rotofab CAI

Car is still running the OEM tune...until the cam goes in it.
Results : 422 rwhp/406 rwtq
Weather corrected results.

Graph showing stock baseline over mods.

On the rollers.
Thats pretty good without a tune. I basically did the same thing. I got Kooks 17/8 silver coated and high flow cats with Rotofab cai installed and tuned by G-force and pulled 421 HP and 419 TQ. That was about two months ago when it was alot cooler. I just did another pull at another place and pulled 415 HP but it was alot hotter.
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Old 06-13-2010, 06:04 PM
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Originally Posted by bigshotls1
u guys arent using the 160 themostat
Yes, my car does have a 160 thermostat.I am doing a cam next so i will need a tune again but my tune was free from Diablo Sport and it made 18rwhp more.
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Old 06-13-2010, 06:07 PM
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You need to tune the car with headers on it, the air/fuel ratio is running way too rich. The ideal A/F ratio is around 13 and yours is at 9.7 which is way off.
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Old 06-13-2010, 07:30 PM
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very nice results.
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Old 06-13-2010, 07:57 PM
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No doubt the car needs a tune....it's pig rich.

However, with the cam swap right around the corner we figured we'd hold off on the tune until the cam goes in.
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Old 06-13-2010, 08:55 PM
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There's no way the af was working on that pull.
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Old 06-13-2010, 10:44 PM
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coming along nicely.
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Old 06-14-2010, 08:57 AM
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Originally Posted by Red00
There's no way the af was working on that pull.
That is correct, the car is running rich, but not that rich!
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