Engine Dyno Testing The VMaxx Throttle Body FINALLY!

[Jason 98 TA]

Sorry for the delay getting you guys data on the throttle body testing, I was making a change to the rocker pedestal designs that slowed down my testing just a little bit.

Thanks to SC2150 for loaning us a Throttle body to test. It was a great looking part no doubt! I really wish I had a good way of testing part throttle throttle response, I bet this thing does well for adding a little extra low end with some of the throttle body bump removed.

Here's the procedures we went through to test the T.B.

1-1 1/2 minute cool down in between pulls

Baseline Stock TB (2 Pulls)

Install VMaxx (2 Pulls)

Remove VMaxx (2 Pulls)

[sspaul]

looks like a gain of about 8 hp, and 12 tq

[SC2150]

Thanks for the test Jason.

This is on an engine dyno so a chassis dyno showing the power at the wheels will be slightly less.
Again, the key to the power gain is breaking the surface tension with the CNC pattern.

[x2martell24]

I love to see numbers that show the facts!! I just put my VMAX on and I could tell the difference instantly........throttle response and low end pull for sure! I know some say they notice no change, but I know I am not imagining it!
Thanks for doing this test!!

[SGOS252382]

I'm trying to understand the graphs.

At the top is Day 1 graph, correct?
The bottom graph is Day 2 graph, correct?

So day 1 graph has the before (without Vmax) and after (with Vmax) numbers on it?

[Padre]

Originally Posted by Jason 98 TA

Day 2 (same engine with 1/3 a point more compression)

Wait... wut?

Padre

[Matt@Texas-Speed]

That's the graph to pay attention to. The bottom line (blue) is the baseline with the stock TB. The red is the VMaxx TB, hp and torque (sorry they're a bit difficult to distinguish which is which.) The graph is RPM (left to right) vs hp/torque (bottom to top.)

Hope that helps!

[SGOS252382]

I'm having a real hard time reading the graph on my laptop. It would be nice if the peak rwhp and peak tq numbers were posted (before and after). So exactly how much peak rwhp and torque did the Vmax make?

3.4 ft. lbs and 3.2 rwhp?

[x2martell24]

Was this on a fully stock car??

[Padre]

Originally Posted by x2martell24

Was this on a fully stock car??

Not if it's making over 500 HP.

Padre

[SC2150]

Pretty sure it is the built motor alone on an engine dyno (correct me if I'm mistaken).

They are also testing it shortly with a ported intake manifold to see how it reacts to the improved flow.

[IndeedSS1]

Looks like it performs well, where we daily drive.

[Matt@Texas-Speed]

That's correct, it is on the engine dyno so that we can eliminate many more of the variables in the combo, climate, coolant temperature, etc!

[CBRTRX]

So on a 580 hp engine there was a gain of about 3 hp then?

[BowlingSS]

Numbers look good.

Bill

[axis]

Originally Posted by Matt@Texas-Speed

That's the graph to pay attention to. The bottom line (blue) is the baseline with the stock TB. The red is the VMaxx TB, hp and torque (sorry they're a bit difficult to distinguish which is which.) The graph is RPM (left to right) vs hp/torque (bottom to top.)

Hope that helps!

Ok, tell me if this the right interpretation of the displayed data.

A highly modified engine on the engine dyno showed a peak Tq increase of 2.5-3.4 ft/lbs and peak HP increase of 2.8-3.2.

If one were to translate this onto a stock engine and shown to the wheels, it would be next to nothing.

[SGOS252382]

Originally Posted by axis

Ok, tell me if this the right interpretation of the displayed data.

A highly modified engine on the engine dyno showed a peak Tq increase of 2.5-3.4 ft/lbs and peak HP increase of 2.8-3.2.

If one were to translate this onto a stock engine and shown to the wheels, it would be next to nothing.

Yes, it was save a lot of confusion if the results (peak RWHP and Peak TQ -before and after) were clearly posted (not in graph form) in the 1st (original post).
Many seem confused by the charts and think the results show impressive HP numbers.
I believe they are comparing chart 1 (day 1) with chart 2 (day 2). They think chart 1 is without the Vmax and Chart 2 is with the Vmax.
When if fact, chart 1 has both before and after results.

[Padre]

Originally Posted by SGOS252382

Yes, it was save a lot of confusion if the results (peak RWHP and Peak TQ -before and after) were clearly posted (not in graph form) in the 1st (original post).
Many seem confused by the charts and think the results show impressive HP numbers.
I believe they are comparing chart 1 (day 1) with chart 2 (day 2). They think chart 1 is without the Vmax and Chart 2 is with the Vmax.
When if fact, chart 1 has both before and after results.

Chart 2 (day 2) is with an 0.3 increase in compression and has nothing to do with the VMAX.

Padre

[SGOS252382]

Originally Posted by Padre

Chart 2 (day 2) is with an 0.3 increase in compression and has nothing to do with the VMAX.

Padre

I thought it was a before and after Vmax test with .3 increase in compression?

I never thought a simple dyno test could be so confusing.

[axis]

Originally Posted by SGOS252382

Yes, it was save a lot of confusion if the results (peak RWHP and Peak TQ -before and after) were clearly posted (not in graph form) in the 1st (original post).
Many seem confused by the charts and think the results show impressive HP numbers.
I believe they are comparing chart 1 (day 1) with chart 2 (day 2). They think chart 1 is without the Vmax and Chart 2 is with the Vmax.
When if fact, chart 1 has both before and after results.

Ah, gotcha on that. I was wondering where people were getting the big increases from. That explains it perfectly.

So for further clearing up. Day one (top chart), showed a peak 2.5 Tq, and 2.8hp increase, while day two (bottom chart) showed a increase of 3.4 and 3.2 (respectively). Day two graph is with 0.3 more compression. The middle chart shows ONLY the change, from both days, over stock. Stock being "0". It is confusing and took me a short while to grasp the way they displayed the information.

I hope this is right and clears up the confusion. At least for me.

[Padre]

Originally Posted by SGOS252382

I thought it was a before and after Vmax test with .3 increase in compression?

I never thought a simple dyno test could be so confusing.

Ah, yes, I was wrong, I think. Day 2 was +0.3 CR, with and without the VMAX.

Or at least I think so.

Padre

[axis]

Originally Posted by Padre

Chart 2 (day 2) is with an 0.3 increase in compression and has nothing to do with the VMAX.

Padre

DOHH, forgot about that little tidbit. IMO, that probably didn't affect the end results that much as the numbers show a change from baseline, with the baseline being the same setup before and after the Vmax. Since it's already a modified engine, I wouldn't think adding 0.3 compression would affect the delta by 33%. I'm sure it explains some of it though. Good catch.

Fixed my previous post to mention the compression increase.

[newmoon]

Originally Posted by axis

Ok, tell me if this the right interpretation of the displayed data.

A highly modified engine on the engine dyno showed a peak Tq increase of 2.5-3.4 ft/lbs and peak HP increase of 2.8-3.2.

If one were to translate this onto a stock engine and shown to the wheels, it would be next to nothing.

I agree. I have the VMAX and while it MAY have increased throttle response a small bit, I can not say for certain. Thank you for the real world testing.

[duffmobile]

Even still, $150 bucks for 3 HP and better throttle response is a great mod. You could spend that money in a lot of worse ways. I'm happy with my VMAX.

[IndeedSS1]

Originally Posted by TX_Shane

What I cant understand is why does everyone say they feel power increases (ass dyno) with their ported TB when I can run a 50 shot of nitrous and feel no difference what so ever. I can hear a difference when the nitrous comes in but I damn sure don't feel it. A 100 shot I can feel but even then its not that big of a difference. Even if a ported throttle body makes 10 hp, there is no way you can feel it. I have a ported TB and my throttle response is the same. It was a waste of money in my opinion.

I would also like to note (which I have yet to see mentioned) that when putting the TB back on, the bolt holes are so big that it can be placed off center leaving a step between the intake and TB. Could this cause the 3 hp difference the dyno saw?

My impressions of "feeling" it was in the lower RPM, lower throttle % position and not at WOT. I can't imagine feeling anything different a 100% TPS.