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Discussion Starter · #1 ·
I recently had a set a set of the new LGM Production Longtube headers installed





Also decided to have a few other components installed besides headers- ported tb and underdrive pulley (which often show very little on the dyno) and the LS1edit tuning. Results....

389.2 RWHP, 372 RWTQ

Comparison to the stock w/ intake baseline...


I am very pleased, huge SOTP gain.

Here are the vids. There is no resonance at cruise but it screams at WOT. Enjoy!


On the dyno

75% throttle through gears

Full throttle

Idle/ Rev
 
G

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Yeah 25 at the rear wheels is a great gain!

Those are the new headers and 3 inch off road X pipe made by BORLA for LGM.

I wish I had a spare $1500 laying around.


Um...Patrick, can you just forward me my annual Digital Corvette bonus check now?
 

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Discussion Starter · #6 ·
do you mean the muffler system? its just the stock titanium system.
 

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zo6 dyno

I did the same mod on my zo6 and it only made 366
i have twinflo with k&n on each side lgm lt headers corsa TI njktr55 & an ls1 edit the only problem that i can see tell me if you agree the o2s were installed improperlly so it caused them car to run lean on both fuel banks so we were all thinking that it ruined the spark plugs it was to late to get a new set right then so they told me to bring it right back it saturday and we should see some better results im am very pissed off about it i hope hes right well tell me what you think
 

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Pushing 390 rwhp on a bolt-on Z is doing well. What's next? ;)

Mark
 
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