Another strong 87 octane G8 tune
08-02-2009, 09:33 PM
#1
Another strong 87 octane G8 tune I just got done tuning another G8. This one is my own personal vehicle. You may recall a 2008 G8 from last year that had big gains on the dyno:
https://ls1tech.com/forums/dynamomet...tane-only.html
That particular 2008 G8 made 279rwhp/299 rwtq with the bone stock baseline. The owner wanted to run 87 octane so I made him a killer regular unleaded tune and the results were 313 rwhp, 328 rwtq.
For my particular G8, it's a 2009. Comparing the factory calibrations, GM did a much better job on the 2009s than the 2008s and there wasn't as much power to be gained with just a tune.
My new 2009 G8 put down 307rwhp/333rwtq bone stock with 87 octane in the tank. With my slick 87 octane tune, we still picked up 18rwhp and 2 rwtq. The car can now cruise 75-80 mph in 4 cylinder mode. Fuel economy is up nicely. I like tuning these cars with 87 octane. We get them on the fringe of the knock sensors kicking in and lock it down. Then if we ever want to go racing, a splash of 93 octane keeps it happy. While I might have been able to get a few more ponies on 93 octane, the tune on 87 octane is really good and leave very little power on the table.
Just a small explanation about the low rpm torque difference: On my baseline dyno pull, we stabbed the throttle 100% later in the rpm range. While we did gain nicely at lower rpm, it was not quite that dramatic. For those who think you can only get strong performance on 93 octane, think again.
https://ls1tech.com/forums/dynamomet...tane-only.html
That particular 2008 G8 made 279rwhp/299 rwtq with the bone stock baseline. The owner wanted to run 87 octane so I made him a killer regular unleaded tune and the results were 313 rwhp, 328 rwtq.
For my particular G8, it's a 2009. Comparing the factory calibrations, GM did a much better job on the 2009s than the 2008s and there wasn't as much power to be gained with just a tune.
My new 2009 G8 put down 307rwhp/333rwtq bone stock with 87 octane in the tank. With my slick 87 octane tune, we still picked up 18rwhp and 2 rwtq. The car can now cruise 75-80 mph in 4 cylinder mode. Fuel economy is up nicely. I like tuning these cars with 87 octane. We get them on the fringe of the knock sensors kicking in and lock it down. Then if we ever want to go racing, a splash of 93 octane keeps it happy. While I might have been able to get a few more ponies on 93 octane, the tune on 87 octane is really good and leave very little power on the table.
Just a small explanation about the low rpm torque difference: On my baseline dyno pull, we stabbed the throttle 100% later in the rpm range. While we did gain nicely at lower rpm, it was not quite that dramatic. For those who think you can only get strong performance on 93 octane, think again.
__________________
2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2018 Cadillac Escalade 6.2L A10 Pat G tuned.
LS1,LS2,LS3,LS7,LT1 Custom Camshaft Specialist For custom camshaft help press here.
Custom LSX tuning in person or via email press here.
2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2018 Cadillac Escalade 6.2L A10 Pat G tuned.
LS1,LS2,LS3,LS7,LT1 Custom Camshaft Specialist For custom camshaft help press here.
Custom LSX tuning in person or via email press here.
08-03-2009, 04:30 AM
#5
Teching In
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Great post..... Patrick I heard that you are going to be on Charlie's GRRRR8 website. This would be great information to post over there. I think I already linked it, in a thread that I started over there (here's the link).
http://www.forum.grrrr8.net/showthread.php?t=9203
Would you be able to tune my car with the current mods that are in my signature? I use only use 93 octane (Shell or BP), interested....
...
http://www.forum.grrrr8.net/showthread.php?t=9203
Would you be able to tune my car with the current mods that are in my signature? I use only use 93 octane (Shell or BP), interested....
...
I just got done tuning another G8. This one is my own personal vehicle. You may recall a 2008 G8 from last year that had big gains on the dyno:
https://ls1tech.com/forums/dynamomet...tane-only.html
That particular 2008 G8 made 279rwhp/299 rwtq with the bone stock baseline. The owner wanted to run 87 octane so I made him a killer regular unleaded tune and the results were 313 rwhp, 328 rwtq.
For my particular G8, it's a 2009. Comparing the factory calibrations, GM did a much better job on the 2009s than the 2008s and there wasn't as much power to be gained with just a tune.
My new 2009 G8 put down 307rwhp/333rwtq bone stock with 87 octane in the tank. With my slick 87 octane tune, we still picked up 18rwhp and 2 rwtq. The car can now cruise 75-80 mph in 4 cylinder mode. Fuel economy is up nicely. I like tuning these cars with 87 octane. We get them on the fringe of the knock sensors kicking in and lock it down. Then if we ever want to go racing, a splash of 93 octane keeps it happy. While I might have been able to get a few more ponies on 93 octane, the tune on 87 octane is really good and leave very little power on the table.
Just a small explanation about the low rpm torque difference: On my baseline dyno pull, we stabbed the throttle 100% later in the rpm range. While we did gain nicely at lower rpm, it was not quite that dramatic. For those who think you can only get strong performance on 93 octane, think again.
https://ls1tech.com/forums/dynamomet...tane-only.html
That particular 2008 G8 made 279rwhp/299 rwtq with the bone stock baseline. The owner wanted to run 87 octane so I made him a killer regular unleaded tune and the results were 313 rwhp, 328 rwtq.
For my particular G8, it's a 2009. Comparing the factory calibrations, GM did a much better job on the 2009s than the 2008s and there wasn't as much power to be gained with just a tune.
My new 2009 G8 put down 307rwhp/333rwtq bone stock with 87 octane in the tank. With my slick 87 octane tune, we still picked up 18rwhp and 2 rwtq. The car can now cruise 75-80 mph in 4 cylinder mode. Fuel economy is up nicely. I like tuning these cars with 87 octane. We get them on the fringe of the knock sensors kicking in and lock it down. Then if we ever want to go racing, a splash of 93 octane keeps it happy. While I might have been able to get a few more ponies on 93 octane, the tune on 87 octane is really good and leave very little power on the table.
Just a small explanation about the low rpm torque difference: On my baseline dyno pull, we stabbed the throttle 100% later in the rpm range. While we did gain nicely at lower rpm, it was not quite that dramatic. For those who think you can only get strong performance on 93 octane, think again.
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08-03-2009, 10:54 PM
#9
On The Tree
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Very interested, also Newbie from the GRRRR8 board here... I'd be interested in this as well. Victoria TX wouldn't be that far for me (Austin). Running Superchips 93 right now on a 2009.5 G8 GT but have always felt that there was a lot of potential with an 87 octane tune.
08-04-2009, 01:09 AM
#10
Teching In
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Being geographically that close, you should definitely get in touch with Patrick G, and definitely get his 87 or 9x octane tunes...
...
09-08-2009, 03:01 PM
#15
