Speed Density Tune Part II
Thread Starter
Team Owner
Joined: Jul 2004
Posts: 24,652
Likes: 298
From: NJ
St. Jude Donor '05-'08
Speed Density Tune Part II
Took a very long ride on Saturday on the NE Crab run and gave the Speed Density Tune by ECS a good workout. I started out at 5am and returned home at Midnight so the car got to see all sorts of different air temps plus some cruising with A/C on since the temps hit the low 90s.
Again the car ran great. There were no surging issues or anything even with the different temperature changes (the day started out at 60 degrees at 5am and was into low 90s by 2:00pm). One thing I noticed and loved was the fact that I could run in 5th gear on the backroads doing 50 and then slowing down to lower the rpms to 1100 without having to change gears. In the past the car would buck below 1500, but now it runs fine. No need to change gears if I don't want to.
Throughout the day the car started right up and went right to the correct idle speed no searching.
when I first turned on the air the car idle did fluctuate at the first stop sign until it settled into the correct idle. After that it seemed to find the correct idle much quicker.
Overall I am still impressed with the tune. Next week I am going to Limerock so I get the chance to see how it does on the track. I assume it will be fine, but we will see.
Again the car ran great. There were no surging issues or anything even with the different temperature changes (the day started out at 60 degrees at 5am and was into low 90s by 2:00pm). One thing I noticed and loved was the fact that I could run in 5th gear on the backroads doing 50 and then slowing down to lower the rpms to 1100 without having to change gears. In the past the car would buck below 1500, but now it runs fine. No need to change gears if I don't want to.
Throughout the day the car started right up and went right to the correct idle speed no searching.
when I first turned on the air the car idle did fluctuate at the first stop sign until it settled into the correct idle. After that it seemed to find the correct idle much quicker.
Overall I am still impressed with the tune. Next week I am going to Limerock so I get the chance to see how it does on the track. I assume it will be fine, but we will see.
Supporting Tuner
Joined: Sep 2004
Posts: 51,896
Likes: 39
From: ================== Houston, Texas www.englandgreen.com ================== Necessary Evil™ __________
CI 6-7-8-9-10 Veteran
St. Jude Donor '05-'06-'07-'08-'09-'10-'11-'12-'13-'14
Curious to see how it works out on the road course Bob. Waiting for your next update. 
Tech Contributor
Joined: Dec 1999
Posts: 32,910
Likes: 2,402
From: Anthony TX
CI 6,7,8,9,11 Vet
St. Jude Donor '08
Bob.
Just got EFI Live professional and may one day consider doing the SD tune. Please keep us posted on how the tune works out for you.
Thanks for letting us know what you think.
Thanks for the info.
Bill Curlee
Just got EFI Live professional and may one day consider doing the SD tune. Please keep us posted on how the tune works out for you.
Thanks for letting us know what you think.
Thanks for the info.
Bill Curlee
Race Director
Joined: Dec 2004
Posts: 13,760
Likes: 75
From: Haymarket VA
I've been running an SD tune since the H/C so I don't really have anything to compare it to. The car drives pretty much like stock - on steroids.
SD tuning is the $hits!
Keep us informed.
SD tuning is the $hits!
Keep us informed.
Thread Starter
Team Owner
Joined: Jul 2004
Posts: 24,652
Likes: 298
From: NJ
St. Jude Donor '05-'08
Originally Posted by EnglandGreen
Curious to see how it works out on the road course Bob. Waiting for your next update.
Road course should be a good challenge for the S/D tune and having Limerock in June and Watkins in July I will be able to see how it runs on a tight track and then on an open track.
Limerock, even though a small group was invited, will be tight so I dont think it will see too much fresh air. WGI is usually wide open so there is a much better chance for cleaner air.
Engine temps, outside temps, and lots of near redline running should be a good indicator of how the S/D tune holds up...
Racer
Joined: Mar 2004
Posts: 382
Likes: 0
From: Arlington VA
Did you and/or ECS decide to keep your MAF?
I understand some people run a SD tune only (read remove MAF) while others keep the MAF and couple it with an SD tune.
Several months ago I spoke to Rick at Synergy Motorsports (very personable, articulate, and knowledgeable guy BTW) and asked him several questions about SD tuning. SD tuning seems to be the way to go, ESPECIALLY if Forced Induction is part of the equation.
- Max
I understand some people run a SD tune only (read remove MAF) while others keep the MAF and couple it with an SD tune.
Several months ago I spoke to Rick at Synergy Motorsports (very personable, articulate, and knowledgeable guy BTW) and asked him several questions about SD tuning. SD tuning seems to be the way to go, ESPECIALLY if Forced Induction is part of the equation.
- Max
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)
Joe Kucinski
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!
Michael S. Palmer
Thread Starter
Team Owner
Joined: Jul 2004
Posts: 24,652
Likes: 298
From: NJ
St. Jude Donor '05-'08
Originally Posted by MadMaxZ06
Did you and/or ECS decide to keep your MAF?
I understand some people run a SD tune only (read remove MAF) while others keep the MAF and couple it with an SD tune.
Several months ago I spoke to Rick at Synergy Motorsports (very personable, articulate, and knowledgeable guy BTW) and asked him several questions about SD tuning. SD tuning seems to be the way to go, ESPECIALLY if Forced Induction is part of the equation.
- Max
I understand some people run a SD tune only (read remove MAF) while others keep the MAF and couple it with an SD tune.
Several months ago I spoke to Rick at Synergy Motorsports (very personable, articulate, and knowledgeable guy BTW) and asked him several questions about SD tuning. SD tuning seems to be the way to go, ESPECIALLY if Forced Induction is part of the equation.
- Max
MAF Is gone....