Does adding Vararam require a tune?
Thread Starter
Pro
Joined: Jul 2004
Posts: 500
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From: Anna Ohio
Does adding Vararam require a tune?
Just got off the phone with a tuner and told him I put the Vararam CAI on this past weekend and he said he's seen alot of C5's with this running "lean". Can anyone back this up?
Tech Contributor
Joined: Apr 2007
Posts: 10,924
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From: Forney Texas
Anything that increases horsepower mostly does so by increasing the airflow through the motor. More air = more fuel. You might not be in unsafe territory adding the Vararam, but tuning would be the proper thing to do. The best tuning should be done on the highway since the Vararam works better when moving and not on the dyno.
Race Director
Joined: Jun 2004
Posts: 19,459
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From: Schaumburg IL
CI 7-8-9-11 Veteran
St. Jude Donor '06-'10, '13
A tune will help just about any performance related mod, intake, exhaust, heads/cam/headers etc etc...
Putting a Vararam on will not make your motor run lean so to speak..the stock tune and computer will adjust for the extra air-flow that is what the MAF sensor is for (among other things).. and will add fuel to compensate. That is why alot of people will tell you to get a tune done if you are doing a lot of mods, to get the max power out of those mods, the stock tune need adjusting as it is conservative from the factory, based on the OEM parts.
Hope that helps
and yes, having a tune with a Vararam shoulde be done while actually driving the car, and not on a dyno since the intake is not designed that way.
Putting a Vararam on will not make your motor run lean so to speak..the stock tune and computer will adjust for the extra air-flow that is what the MAF sensor is for (among other things).. and will add fuel to compensate. That is why alot of people will tell you to get a tune done if you are doing a lot of mods, to get the max power out of those mods, the stock tune need adjusting as it is conservative from the factory, based on the OEM parts.
Hope that helps
and yes, having a tune with a Vararam shoulde be done while actually driving the car, and not on a dyno since the intake is not designed that way.
Melting Slicks
Joined: Feb 2001
Posts: 2,156
Likes: 12
From: Farnham Virginia
Interesting? I installed a set of LG streets this winter & mailed my PCM to East Coast Supercharging for a tune. Since I haven't done any internal engine mods I thought the tune would be sufficient.
Will this custom tune be sufficient after adding a Vararam?
Will this custom tune be sufficient after adding a Vararam?
Thread Starter
Pro
Joined: Jul 2004
Posts: 500
Likes: 1
From: Anna Ohio
Do you have a high HP 97-98 Corvette?
Did you know that the PCM used in your 1997 or 1998 Corvette is extremely slow and inconsistent compared to the PCM in a 1999-2004 Corvette?
This becomes a bigger problem as you add mods and increase horsepower substantially. We have found that the early model LS1 PCM simply cannot keep up with the rate of engine climb on bigger horsepower cars. Computer glitches and inconsistencies surface during tuning that simply cannot be resolved, even with the most advanced modern tuning software.
THE SOLUTION:
ECS can help you by updating your 1997 or 1998 PCM to a brand new OEM 1999-2004 Model PCM. You will get a more consistent tune, better throttle response, and A4 cars will benefit from better shift response.
Get the most out of your 1997 or 1998 Corvette by bringing it to ECS for this PCM upgrade along with your choice of tuning listed above. Cars with forced induction or high lift cams using the latest custom operating systems will benefit the most from this upgrade along with our new Speed Density Tune.
PCM Upgrade - $599 Installed
(ALL TUNING OPTIONS LISTED ABOVE AVAILABLE AT ADDITIONAL COST)
Did you know that the PCM used in your 1997 or 1998 Corvette is extremely slow and inconsistent compared to the PCM in a 1999-2004 Corvette?
This becomes a bigger problem as you add mods and increase horsepower substantially. We have found that the early model LS1 PCM simply cannot keep up with the rate of engine climb on bigger horsepower cars. Computer glitches and inconsistencies surface during tuning that simply cannot be resolved, even with the most advanced modern tuning software.
THE SOLUTION:
ECS can help you by updating your 1997 or 1998 PCM to a brand new OEM 1999-2004 Model PCM. You will get a more consistent tune, better throttle response, and A4 cars will benefit from better shift response.
Get the most out of your 1997 or 1998 Corvette by bringing it to ECS for this PCM upgrade along with your choice of tuning listed above. Cars with forced induction or high lift cams using the latest custom operating systems will benefit the most from this upgrade along with our new Speed Density Tune.
PCM Upgrade - $599 Installed
(ALL TUNING OPTIONS LISTED ABOVE AVAILABLE AT ADDITIONAL COST)
Racer
Joined: Mar 2003
Posts: 440
Likes: 7
From: Willow Park Texas
No you do not need a tune. That is what the MAF sensor and closed loop take care of. After 4000 rpm you will come out of closed loop but the stock tune for speed density is rich so you will not hurt anything. Sounds to me like someone is looking for some business.
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