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A302 · 11-04-2013, 11:17 PM

I used Qt gas on my first data log I sent to Justin. It had some knock. When I switched to Chevron it was way better. I've also had good luck with shell too. All were 93 octane. I think I'm at 15 degrees of timing with no problems.

Justin@VMP · 11-14-2013, 12:09 PM

Glad you liked everything.

After having dynoed, datalogged, and open tracked a bunch of 5.0s I'm not crazy about high timing on these engines on pump gas. I generally give the KS about +/- 3* leway, on most cars it will start out with 12-14 and add some timing, but on some it runs in the middle.

You can often get away with an extra couple degrees on the dyno and show 20-30rwhp more.

The good thing is once you get into that timing range they can take a ton of abuse, I've opened tracked my TVS Boss on 91 oct with 230F coolant temps and 150F intake temps and it's been happy with 13-14* with an 82mm pulley/10psi. I've found the same with Jeff Lacina's VMP TVSed GT that he open tracks, and he driver harder than me.

I find a little torco goes a long way and lets us get into the 18-20* range very safely.

A302 · 11-14-2013, 12:23 PM

Do you have a release date on your 8 rib set up?

**PLASMAN** · 11-15-2013, 01:21 AM

Originally Posted by A302

Do you have a release date on your 8 rib set up?

I believe its already available cause Eric Wood was looking at it 2 weeks ago when we were having belt problems on his car

A302 · 11-17-2013, 11:05 AM

Originally Posted by PLASMAN

I believe its already available cause Eric Wood was looking at it 2 weeks ago when we were having belt problems on his car

I'll give VMP a call.

**Rydawg1** · 11-23-2013, 08:47 PM

Since installing the VMP TVS kit, this is the first time being on the dyno. I made 2 pulls and this is the 1st pull. It made 583rwhp & 524rwtq on 93 pump gas (QT). I noticed at ~3,500 RPM's the torque curve dips just a tad.

I was able to data log the dyno pulls. This screenshot shows the reason for the dip. At ~3,500 RPM the Knock Sensor spiked to 2.61. I only highlighted Knock Sensor, RPM, SA and SA v2 for the graph. The other information is in there but you'll need to click the pic, then "+" to view and read all of the other numbers.

I was guessing it would make around 550rwhp. So needless to say I was pleasantly surprised with these numbers. I'm very happy with VMP, their 5.0 TVS solution and would definitely recommend it!