Dyno results
Thread Starter
Race Director
Joined: Mar 2004
Posts: 12,634
Likes: 15
From: IL, Chicago area.
St. Jude Donor '14-'15-'16
Dyno results
OK since my first tune represented in blue on oct10 2004 I have added 4.10 gears 90mm LSX intake and a 90mm ls2 TB and had retune done today represented in red on the dyno sheet.
My peak HP stayed the same but I lost some HP thru the curve and lost about 14 pounds of torque. Does this seem right considering the mods listed in my sig?
My peak HP stayed the same but I lost some HP thru the curve and lost about 14 pounds of torque. Does this seem right considering the mods listed in my sig?
Thread Starter
Race Director
Joined: Mar 2004
Posts: 12,634
Likes: 15
From: IL, Chicago area.
St. Jude Donor '14-'15-'16
I expected some loss with the 4.10's but I expected the 90mm setup to offset that plus maybe 5 to 10hp extra.
The tune in Oct of 04 was with an LS6 manifold, stock LS1 TB, and stock 2000 LS1 MAF.
Todays tune also had stock MAF but the 90mm set up.
I was told by the shop they dont see much in the way of results with the 90mm setup on stock 346 cubic inch motors and that most of the time a 78mm setup is better.
The tune in Oct of 04 was with an LS6 manifold, stock LS1 TB, and stock 2000 LS1 MAF.
Todays tune also had stock MAF but the 90mm set up.
I was told by the shop they dont see much in the way of results with the 90mm setup on stock 346 cubic inch motors and that most of the time a 78mm setup is better.
Le Mans Master
Joined: Feb 2002
Posts: 5,970
Likes: 20
From: San Marcos Texas
I was told by the shop they dont see much in the way of results with the 90mm setup on stock 346 cubic inch motors and that most of the time a 78mm setup is better.
Melting Slicks
Joined: Sep 2003
Posts: 2,911
Likes: 1
From: Augusta GA
St. Jude Donor '05-'06
Damn brother sorry to hear about the lack of gains... Gues the FAST 90 and 90 TB I have been looking at just isn't going to happen. 2k$ installed and tuned for maybe 10hp? 
Dave
Dave
Racer
Joined: Jan 2005
Posts: 428
Likes: 0
From: Punta Gorda FL
Originally Posted by chiefDave
Damn brother sorry to hear about the lack of gains... Gues the FAST 90 and 90 TB I have been looking at just isn't going to happen. 2k$ installed and tuned for maybe 10hp?
Dave
Dave
Advanced
Joined: Feb 2005
Posts: 58
Likes: 0
From: Denver CO
Take the FAST 90mm intake off and have someone who knows what they are doing, like Tony at AFR, do a velocity port job on the intake. You'll be happy with this mods especially after head/cam upgrades.
Here is what a stock FAST runner looks like.
Here is what a stock FAST runner looks like.
Last edited by GTO_Scott; Oct 21, 2005 at 09:40 AM.
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