Festiva Dyno Day at Shift Fast Motorsports

[Zanzer]

Oh ya..the old Mustang Dyno, the original "Heartbreaker" LOL. I remember the first time I ran my Mustang on a MD. It was "WHAT!?" and "I need a Summit catalog STAT!" :mrgreen:

[FestYboy]

i need more carb ( unit in hand ) and a litle more head work.... plus find out why cyl 2 is 20psi under the other 3 (1, 3 and 4 are 185, 184, and 185)

[Advancedynamix]

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

DynoJet units are not designed to accurately measure HP or Torque. They are a diagnostic tool to dynamically test and show drivetrain problems. They don't claim accurate HP or TQ measurement from their devices. They are not a true load bearing Dyno, and can't actually measure true loaded TQ, they simply estimate it. Don't believe me? CLICK HERE.
Tuning salesmen love dynojet dynos because it's really easy to trick a dynojet, and since the company never claims to be an accurate way of testing output, the only people to blame for the inaccurate facts are the consumers who don't educate themselves on HP measurement, they just buy the stuff off the guy who has the best numbers on paper. Really a shame if you ask me.

Okay, I'll get off my soapbox now, but I just wanted to put that out there. Here are some dyno runs with Tweak awhile back. This was 8.8:1 comp, B6t with stock ECU and a little over 12 PSI of boost, no intercooler, watermeth injection. 2.5" exhaust with no cat. ambient temp was 102 degrees and the correction factor was set to 1, which means there is no correction, this is actual WHP/WTQ.



The chart above shows that the dips in my TQ curve are directly proportionate to my A/F ratio. Stock b6t tune is inconsistent and overall it's too rich even at 12psi with a larger exhaust and a stock turbo. Another thing to note is that with a .175 percent correction I would have put down roughly 28 more ft.lbs than what these graphs show, which shows that Wills numbers are right in the ballpark. He has less comp. but a better tune and more boost.

[Advancedynamix]

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!

Yeah, they typically autosize the graph resolution to fit the output of the car. I'm not a big fan of that, and it makes overlapping charts really a pain in the bottom.

[Zanzer]

Once again...Charlie FTW

We used to tell everyone..if you want a measurement that tells you what you're actually making, use a load bearing dyno. If you want a dyno graph to brag about and show off to your buddies, use a Dynojet :mrgreen:

[zoom zoom]

Nice guys very nice! I'm worried about the b6 auto, if you find out what's going on with that car it would be nice to post it here so we all know!! I know my b6 didn't feel much better until all the electronic stuff was swapped from festy to 2nd gen.

Is that barbiecar putting out 125hp & 136 ft lbs of tq? So awesome that you guys got together and did this, good stuff!


btw, you gotta let us in on that fuel mod your talking about haha..

[kumalaba]

oh yeah thats awesome, im glad you guys had fun & when i get my car back from greg lets go again! also we need to get together for a track day 1/8 mile or 1/4 mile, that would be a blast. what is the closest track nearby?

[Motoxpress]

That would be great Danny we really want to get a B6gen2, B6ME, B6D, BP, BP/RT and a BPT on the rollers. Also we have have 2- 1/8 mile and 1- 1/4 mile tracks near by. The guys at Shift Fast loved the all Festiva Dyno day they only had to set the Dyno up once and didn't have to fight the cars on or off it. By the time we left a couple of them wanted to find Festivas for themselves (especially after they drove Festicul & Altered). They had that big goofy smile on there faces that we all had the first time we drove a higher HP Festiva!

[greywolf200]

Festevil3's 90 5 speed B6T car "Festicul"

Engine = 1.6 DOHC B6T

Mods = Stock(?) @ 10psi (boost leak). Festevil will have to chime in on his mods. I know there are many suspension and other mods done to the car but I'm not sure about the engine.

Curious as to low torque of Festicul?

[Motoxpress]

We believe its due to a leaking down pipe and a bad restriction in the inter cooler piping. As soon as the flanges are ready we are building new down pipes for both B6T cars and I'm trying to get Kevin to bring festicul to the shop to revamp his IC piping.

[scitzz]

That would be great Danny we really want to get a B6gen2, B6ME, B6D, BP, BP/RT and a BPT on the rollers. Also we have have 2- 1/8 mile and 1- 1/4 mile tracks near by. The guys at Shift Fast loved the all Festiva Dyno day they only had to set the Dyno up once and didn't have to fight the cars on or off it. By the time we left a couple of them wanted to find Festivas for themselves (especially after they drove Festicul & Altered). They had that big goofy smile on there faces that we all had the first time we drove a higher HP Festiva!

Maybe I can make the next one, and there is the 2nd gen B6.

[Motoxpress]

The guys at SF said they could handle doing more than 10 Festivas in a day due to the easy setup. 2 zip ties and a frayed bungee cord and we were ready to run LOL!! So bring them on we are looking at setting another dynoday up after Madness.

[kumalaba]

^:thumbs_up: i like the dyno idea but the track times better b/c then the people who dont believe the dyno figures wont be able to dispute the 1/4 mile times :whip2: i think barbie car will run 14s & your & kevins car 13s(altered & festicul) not sure what my car will run but im hoping for 13s as well

[Zanzer]

Curious as to low torque of Festicul?

Another part of the problem could be because it's running pig rich. The AFX was holding steadily at 9 under full boost. It'll be interesting to see what Festicul puts down once the boost leak is fixed and the AFR is straightened out.


Danny - The dyno days are just to see what kind of ROI we're getting for the money and work put into the cars and see what mods have the best bang for the buck. Plus these guys are just plain fun to hang out with I'm sure there will be a track day after the tuning and mods are all sorted out. Plus it will be really cool if the SFM guys have something built to run at the track as well. These guys are talking about building a MONSTER LOL :mrgreen:

[TheNewAmericanSpirit]

Here's Festevil3's 89 auto car called "Lean". I notice they have his name as "Dealer" LOL

Engine = B3

Mods = Minor port work to the head. Pocket porting and exhaust runners.

I'm assuming all these numbers are to the ground. If so and if an auto causes a 20% loss then your port work gain that 20% back. Just like Kevin was hoping!