Festiva Dyno Day at Shift Fast Motorsports

[greywolf200]

Motoxpress' B6T 5 speed car "Altered"

Engine = 1.6 DOHC B6T

Mods = BOV and AEM TruBoost at 14psi

After Moto took me for a ride, I knew that thing was a bear, but those are some pretty impressive numbers.

Glad all had a good time.

[greywolf200]

I have a feeling the numbers are a bit high but a good comparison between the cars for sure!

You think the dyno operators don't know what they're doing or the charts are faked? Inquiring minds want to know.

[bhazard]

Neither. Some dynos read high, some low.

[TominMO]

Ladyblaster's 91 B6 auto car "Old Glory"

Engine = B6 SOHC

Mods = Minor head work, pocket porting and exhaust runners.

This should be in the neighborhood of 83 HP. What's wrong here?

Great to see the graphs BTW!

[Team Lightning]

Tom, I believe Lady Blasters is an automatic. That could account for the loss you are thinking about.

[Grey Vw]

Cool to see so many dyno charts.

[Motoxpress]

I have a feeling the numbers are a bit high but a good comparison between the cars for sure!

Well next time we will just use a Dynojet and really show some inflated numbers.
Do the research and check out the DynoDynamics specs vs Mustang Dyno vs Dynojet.

[Zanzer]

Actually those numbers should be pretty close. A Dyno Dynamics is comparable to a Mustang dyno which typically reads lower because it's what the car is actually putting to the ground and it loads the car as if it were on the street. Even one of the guys at SFM called the DD the "heartbreaker" LOL. The numbers would have been bigger if we had ran them on a Dynojet.


Jack - You can play with the correction factor on all dynos but Dynojets tend to be the easiest to inflate. On this dyno the correction factor was 1.175. If they want to make a number that looks like a Dynojet value they use 1.250


Tom - Not sure what the deal was with Angie's B6. I thought it was low as well, but it's a pretty well worn auto and we also know the electronics have been an issue on her car. We tried a different VAF on the car last night night and it didn't like it and the ECU is suspect as well.

[Motoxpress]

Zanzer and I will be looking into Glory's low numbers. We were really disappointed at the results.

[Advancedynamix]

Good to see such a wide variety of tests from one dyno. Great job guys. The automatic transmissions can be expected to put down less hp. Dyno Dynamix meters are usually pretty accurate, however I'm noticing a strange trend here. around 3400 RPM, all the graphs have a strange TQ dip. This may be an issue with the load on the dyno. Also, for comparison sake, it's best to get all the charts with the same resolution. The scales are different for each car here and that makes comparison more difficult. If the resolution were the same then that 3400ish rpm deviation would look nearly identical on every chart if my theory is correct. This looks like an equipment error. Nobody wants a dip in TQ right there, so this would be a focus of mine as a tuner, but I don't think it's in the cars themselves.
Also, in the future, try to get the A/F on the same graph and include the page that gives peak values. Looking forward to more of this!

[Motoxpress]

Oh and I forgot one mod EL prototypes ecu chip.

[Zanzer]

More to come Charlie

As far as the TQ dip, I did notice that and also noticed the cars were bogging some right after he would start the test and give it the throttle and it took them a little to pick up. I was thinking this was where the dip may have came from. But 3400 does seem a little high for that since the boosted cars were passed the "bog" by that RPM. He did run AFR on the turbo cars but it wasn't on the graph. I'm more accustomed to seeing Mustang Dyno graphs and I think they could do a little better with the info on the graph and the line colors. But, I have seen the shops around here change the resolution from car to car. I'm thinking they do this because most people are only concerned with what their car makes and not the next guys LOL.

We'll have to inquire about this on the next trip!

[FestYboy]

Ladyblaster's 91 B6 auto car "Old Glory"

Engine = B6 SOHC

Mods = Minor head work, pocket porting and exhaust runners.

don't feel bad, Scrappy came up with the same numbers in 4th (stock cam, Full port job on the head, FMS headers and 2.25" exhaust, stock carb) when i ran it on the dyno at NTI.

[Zanzer]

^^ But we need more power captn! We talked about the "fix" for it today...just gotta get time to install it :mrgreen:


What kind of dyno was that on at NTI?

[FestYboy]

IIRC it was a mustang... large known mass roller, car was lifted to run on the unit, it's been 8 years, i'll have to hunt hard to find the sheet. i know that i ran out of carb past 5300 and i had the timing pulled back to 8 from the 12 that i usually ran (87 oct tune).