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Yeah, it is odd based on all the gains that I have seen from other members.
My plan is to get it tuned again with HP Tuner and run it at the track next tuesday evening, the condition should be pretty close to when I last ran with vararam and see what happens.
If and when I get everything sorted out and feel comfortable enough to re-install the vararam, I will.
My problem may not be related to vararam and vararam removal is just a starting poing to see if my suspicion was correct.
Just for your info because I have been following these vararam threads for a while. A Z06 does not seem to benefit as much as the C5 with the vararam over stock. Not sure why, although the Z06's stock air box is a little more free flowing than the LS1's on the C5.
I think it is a good idea to give the vararam another try. But you have a lot more motivation than I do, to take that bad boy off and put it back on. I am afraid I would peg my profanity meter for the month if I had to install it twice.
I think it is a good idea to give the vararam another try. But you have a lot more motivation than I do, to take that bad boy off and put it back on. I am afraid I would peg my profanity meter for the month if I had to install it twice.
LOL, yeah, it was PITA to install but since I did it once, it should take as long and shouldn't be as difficult as first time. Removing it was piece of cake btw.
How many constant weekend runs have you made with a 12.35 before the V-Ram ? Because if it is just one weekend you ran a 12.35, then the next weekend you made a mod and ran a 12.55, then it probably is track condition. But if the V-ram is the cause of it being slower, then re-tuning it like you said would be a good idea. You won't be getting any decent HP improvement until you get the rpm up and some mph. With Ram-air the faster you go, the better it works. It's probably just starting to work decent at the end of the 1/4 mile. So I would think you would need to fatten up the mixture just a little on the top end since you should be pushing more air in the motor. Also if you dyno, you should have a really high cfm fan right in front of each intakes opening to simulate the wind you will be blowing in there to get the right mixture. Let us know what you find out. I have a stock 99 that I am going to start doing some mild mods too, and I am interested in your final results. Thanks for sharing the info.
Yeah try about 200mph before you'll see any gain and about 350mph before their is any 'significant' gain.
How many constant weekend runs have you made with a 12.35 before the V-Ram ? Because if it is just one weekend you ran a 12.35, then the next weekend you made a mod and ran a 12.55, then it probably is track condition. But if the V-ram is the cause of it being slower, then re-tuning it like you said would be a good idea. You won't be getting any decent HP improvement until you get the rpm up and some mph. With Ram-air the faster you go, the better it works. It's probably just starting to work decent at the end of the 1/4 mile. So I would think you would need to fatten up the mixture just a little on the top end since you should be pushing more air in the motor. Also if you dyno, you should have a really high cfm fan right in front of each intakes opening to simulate the wind you will be blowing in there to get the right mixture. Let us know what you find out. I have a stock 99 that I am going to start doing some mild mods too, and I am interested in your final results. Thanks for sharing the info.
My 12.35 ET was done around the numbers of 12.35 - 12.5 during two different days (3 weeks apart). Anyways, I'll be at the track next tuesday to see if there is any change. I'll be tuning this weekend because I'm pretty sure the removal of V-Ram changed the tuning parameter.
I'll post my track times on this thread next tuesday night or wednesday morning.
Korreck must be on vacation! Sorry to hear about your gains, I am at a loss as what to say. I know I saw tremendous gains with the installation of the VaraRam. Good luck with your new setup!
Hmm interesting thread...sorry to hear you did not get the gains you expected. I tend to agree with the other post that recommened you do several runs over several weekends to see more long term results..I would be more convinced the Vararam did not work if after 5 or 6 trips to the track you were slower or saw no gain.
Correct me if I am wrong, but I seem to remember that the Vararam does more good at the top end MPH,, 60MPH+ so would that explain something here?
Hmm interesting thread...sorry to hear you did not get the gains you expected. I tend to agree with the other post that recommened you do several runs over several weekends to see more long term results..I would be more convinced the Vararam did not work if after 5 or 6 trips to the track you were slower or saw no gain.
I went to the track on three different times with V-Ram and I was in 12.5 range (depending on 60' time) on all three dates. As I stated, it may not be V-Ram that is causing slow ET, it is just my suspicion and if I'm wrong then V-Ram goes right back in. I have no problems with V-Ram and as many have stated, it is an effective mod. I may just be anomaly.
Correct me if I am wrong, but I seem to remember that the Vararam does more good at the top end MPH,, 60MPH+ so would that explain something here?
Yup, that's my understanding, which is V-Ram is much more effective at higher speed.
I can't wait for tuesday to see how I do on the track.
I went to the track on three different times with V-Ram and I was in 12.5 range (depending on 60' time) on all three dates. As I stated, it may not be V-Ram that is causing slow ET, it is just my suspicion and if I'm wrong then V-Ram goes right back in. I have no problems with V-Ram and as many have stated, it is an effective mod. I may just be anomaly.
Yup, that's my understanding, which is V-Ram is much more effective at higher speed.
I can't wait for tuesday to see how I do on the track.
Actually there is also the school of thought that the vararam helps you most at the beginning of the qtr mile run from the standstill. Several reasons for this.
1. Vararam breathes ambient air from a standstill. Most other CAI's and the stock setup will be breathing engine compartment temp air when setting still.
2. Engine compartment air is at its hottest when you are sitting still.
3. When it comes to ET improvement anything that helps at the beginning is much more significant then at the end of the race. For example most racers will tell you that a 1 tenth in a 60' will equate to 2 tenths in the qtr mile.
Actually there is also the school of thought that the vararam helps you most at the beginning of the qtr mile run from the standstill. Several reasons for this.
1. Vararam breathes ambient air from a standstill. Most other CAI's and the stock setup will be breathing engine compartment temp air when setting still.
2. Engine compartment air is at its hottest when you are sitting still.
3. When it comes to ET improvement anything that helps at the beginning is much more significant then at the end of the race. For example most racers will tell you that a 1 tenth in a 60' will equate to 2 tenths in the qtr mile.