Vararam Dyno on LS3 - coming soon

[BackinBlackSS/RS]

Originally Posted by IndeedSS1

What do your LTFTs lock in at when you go into OL? I'm not sure if you've ever mentioned it or not.

I use the Dashhawk to do logging. It is basically antiquated and I cannot get the software for the computer laptop anymore. That would allow me to record(although a very small sample) what is going on. Now the device itself can record and I know that it has OL readings, but when you look at the recorded info it is very limited. I need a fairly cheap option to record and download onto my computer so I can best analyze it. I just don't want to put out the money say on HP Tuners and not really use it that much. I need to find someone with HP Tuners in the area who would be willing to do a ride along and do some testing.

[Pollock]

Originally Posted by BackinBlackSS/RS

If you are gonna do more than your Flowmaster ie VMAX throttle body, longtubes, cats, etc. and don't want to tune, then yes I would say the CAI brand would be your best bet. If Flowmaster is all you have planned, the Vararam no tune intake should be fine. I have the Cherrybomb axleback exhaust with the Varaam and I have done some fuel trim logging and they have looked pretty good. I love my setup. If later on down the road I start adding mods I will tune anyway as this is the only way to get the most out of your mods.

After the CAI I am done modding the car. I will probably trade it off in 2013 for a ZL1.

[BackinBlackSS/RS]

Originally Posted by Pollock

After the CAI I am done modding the car. I will probably trade it off in 2013 for a ZL1.

If your want the most bang for your buck with the CAI intake I would add the ADM scoop as well. With the Vararam the scopp is not needed as it gets it's air from in front of the radiator as you are cruising down the road. A straight shot of air right into the engine. I love that about the Vararam.

[IndeedSS1]

Paul, as long as you can monitor LTFT, when you put the pedal all the way down (100% TPS) while cruising along going say 35 mph in 3rd gear, that should cross you over from CL to OL. The LTFT should lock on to a fixed number and stop floating around. I know the actual TPS is lower than that something like 48% but going 100% will guarantee it. I still have my stock tune on my laptop that I reference with HPTuners software on occasions like this. I also have a new Aeroforce gauge that I'm still working on getting the over the steering wheel pod made so I can do monitoring, although my AFR looks fine at WOT with the new setup.

[BackinBlackSS/RS]

Originally Posted by IndeedSS1

Paul, as long as you can monitor LTFT, when you put the pedal all the way down (100% TPS) while cruising along going say 35 mph in 3rd gear, that should cross you over from CL to OL. The LTFT should lock on to a fixed number and stop floating around. I know the actual TPS is lower than that something like 48% but going 100% will guarantee it. I still have my stock tune on my laptop that I reference with HPTuners software on occasions like this. I also have a new Aeroforce gauge that I'm still working on getting the over the steering wheel pod made so I can do monitoring, although my AFR looks fine at WOT with the new setup.

It will read TPS and OL LTFT. The problem is I cannot watch it while I'm driving and I don't have the software anymore to record it. I've searched all over the net and it's no longer available. I am going to recheck the unit and see if i can recored TPS, OL, LTFT and read on the unit. I'll let you know. When I had my GTO, it was easy. I just recorded, plugged it in the computer and i could see all that. I should know something in the next few days. I'll keep ya posted. Oh and i did finally check my filter and she was clean as a whistle. Of course I don't drive mine daily and not in the rain if i can help it.

[IndeedSS1]

Originally Posted by BackinBlackSS/RS

It will read TPS and OL LTFT. The problem is I cannot watch it while I'm driving and I don't have the software anymore to record it. I've searched all over the net and it's no longer available. I am going to recheck the unit and see if i can recored TPS, OL, LTFT and read on the unit. I'll let you know. When I had my GTO, it was easy. I just recorded, plugged it in the computer and i could see all that. I should know something in the next few days. I'll keep ya posted. Oh and i did finally check my filter and she was clean as a whistle. Of course I don't drive mine daily and not in the rain if i can help it.

If guys come up with some good numbers, I wouldn't be totally against trying another VR. As you know I had a couple other issues with mine, but would have been something I could remedy. Without tuning I couldn't fix fueling.

[BackinBlackSS/RS]

Originally Posted by IndeedSS1

If guys come up with some good numbers, I wouldn't be totally against trying another VR. As you know I had a couple other issues with mine, but would have beed something I could remedy. Without tuning I couldn't fix fueling.

Yep, I hear ya there.

[Viral]

BackinBlack - have you considered a used Predator for logging? I got one used on here for way under $200. You can save and download short logs directly to the tuner or use the free datalogger software to connect it to a laptop and log all day and night. Fairly cheap option that is well supported and works great.

For those with a VR and did any data logging, did your LTFTs go up or down when you installed the intake?

[mrh923]

I've got the vr and like it so far. I've been debating on a tune. How would I go about it? Do I just give my mod list to say janetty, and he sends a tuner with it loaded? Also, where does it hook up at?

[IndeedSS1]

Originally Posted by mrh923

I've got the vr and like it so far. I've been debating on a tune. How would I go about it? Do I just give my mod list to say janetty, and he sends a tuner with it loaded? Also, where does it hook up at?

Yep Ted would be able to take care of you and the OOBDII connector is under the dash by your left knee.

[mrh923]

Originally Posted by IndeedSS1

Yep Ted would be able to take care of you and the OOBDII connector is under the dash by your left knee.

Awesome thanks. So my "no tune" vr would have no issues with a tune? I've got 2500 miles on my car and a vmax tb in the mail so I'm thinking a tune is needed next. Maybe lt headers after.

[IndeedSS1]

Originally Posted by mrh923

Awesome thanks. So my "no tune" vr would have no issues with a tune? I've got 2500 miles on my car and a vmax tb in the mail so I'm thinking a tune is needed next. Maybe lt headers after.

It will be even better with a tune. But if you wanted to, VR will sell you just the piece that differentiates the tune from no tune. With a tune, the tune version supposed to give even more gains.

[Viral]

My vararam was waiting for me on my porch when I got home today. The vmax ported TB is in transit. I'll (sadly) put my stock tune back this weekend and start doing my baseline logging and hopefully get some stock dynolicious runs in this weekend, if the weather holds out...

[IndeedSS1]

Originally Posted by Viral

My vararam was waiting for me on my porch when I got home today. The vmax ported TB is in transit. I'll (sadly) put my stock tune back this weekend and start doing my baseline logging and hopefully get some stock dynolicious runs in this weekend, if the weather holds out...

Just remember once the VR goes on, TB doesn't matter, you need to put a hundred or so miles on before dynoing. Otherwise the numbers will start out high and then start dropping or settling in. When I went to the dyno, I had about 2000 miles on my VR and we did three pulls. While sitting on the dyno, I swapped to the stock airbox and we did three more pulls. Unfortuantely there was no relearning time with the stock box.