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Old 10-01-2014, 11:03 PM   #1
ck-GT86
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Interesting Findings on the Dyno - OpenFlash/Vishnu tuned

Disclaimer:
I'm not bashing on any tuning and I hope no one does here with this thread. I've loved my OpenFlash tune since day 1, recommended it to many folk around me. With all my mods, I figured it was time to throw it on the dyno to see what I've made being NA...

Dyno:
MaHa LPS 3000 KPW, had 4 runs total

OpenFlash Version:
Off the Shelf v. 2.0 beta

Why:
Research around the Interwebs claim Dynojet, Mustang, and Dynapak all bump their numbers up; the gauges can all be modified and tinkered with. I wanted something realistic, something static and non-adjustable. I chose MaHa specifically for this, partially too because the nearest shop with a Mustang dyno wasn't answering their phone. I found out today MaHa has the capability to hold dyno's longer than the average 10 seconds, it's a highly sophisticated dyno. AND the starting rpms can be captured below 2000rpms -- impossible on Dynojet and Mustang dynos (read-on, you'll see why this is important)

My Mods:
It's a short list of things -- E85 Stage 2 Vishnu Tune, P&L EL Catted Headers, P&L OP, Perrin 3" exhaust, Mishimoto Intake hose, K&N drop-in filter, modified snorkel, and Circuit Werks pulleys.

Stock Dyno:
The numbers seem reasonable, I wouldn't expect the Twins would be anywhere near 200hp to the wheel. The dyno below shows about 137whp, the torque dip is evident on the orange line from 3200 - 4000 rpms.

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Prepping for my Dyno
The MaHa calibrates itself between 1500 - 1800rpms. Unfortunately I had ZERO ----- 0 ------ ZERO pickup in 5th gear from a stop. A stock car and a non-Vishnu tuned car both can pickup in 5th from a stop (though wobbly) and get the wheels going (see stock dyno).

The specialist tried to take off in mine in 5th and it wouldn't go...in the pictures below you'll see the wheels dont get going until at 2000rpms, it ramps up as though my car was boosted. This is the important part I mentioned earlier, all other dyno's start well beyond the 2000rpms range and run for about 10 - 15 seconds. The MaHa runs for more than 30 SECONDS.

Again, this isnt pointing fingers at any tuner, it's the capability of the dyno itself. Machine error, not human. After seeing this, I step back and question every dyno I've ever seen.

Dyno Run 1
Vishnu did a superb job of getting rid of the torque dip at 3200 - 4000rpms, completely linear. I applaud because that's something they said it'd do, and it obviously shows.

HOWEVER.....

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What is that at 4700RPMS!?!?!? !!!!!!!!?????!?!?!?!?!?!?!?!?!?!?!?!?!!!


I thought this was the stock torque dip from afar....boy was I wrong. Remember, stock torque dip is 3200 - 4000rpms, NOT 4700rpms. Let's look at the next dyno run..

Dyno Run 2:

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Nope, still there. I asked the specialist what it could it cause that...is it because I went EL on my headers? Is it the E85? What's the problem???

The specialist said he encountered this also on another car that was also running a Vishnu tune. Took about a whole day with the help of an outside party to adjust that dip. ((It's evident this is a tune issue, the huge dip doesn't exist on the stock tune. In fact, the stock tune shows a progressive line when compared to mine.)) <--- IGNORE


I'm redacting the above statement and the one below, as it came off incorrectly. @Shiv@Openflash and the Team have kindly reached out to help me resolve the issue/s with my car. Pending further updates, please don't discredit Vishnu in anyway. I made an error in the claims. @DAEMANO

Whats Next:
I hope that @Shiv@Openflash finds a fix for these two issues: no power in the 1500rpm range and MASSIVE dip at 4700rpms. <--- IGNORE

I dont know what dyno you guys are using -- I'm no professional, but I think a day on the MaHa would really help out.

Over and out..

.ck
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Last edited by ck-GT86; 10-02-2014 at 02:33 PM. Reason: Mistake in my claims, came off wrong
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Old 10-01-2014, 11:07 PM   #2
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Some boost will fix that right up.
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Old 10-01-2014, 11:13 PM   #3
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SWAG says that a table that kicks in right at 4500 is wrong.

Do you have a log?

Compare the Vishnu tune and the stock tune.
then compare OFT tune and the stock tune.

I think RR can even save the comparison IIRC
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Old 10-01-2014, 11:14 PM   #4
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I don't think that dip is tune related. Looks like a dyno or Dyno operator problem to me. There is literally nothing in the tune file that would cause something like that. I'm willing to offer a free test of your car on a dynojet or mustang dyno to confirm.

Also a mustang dyno is capable of doing everything you describe with respect to the Maha dyno. And you wouldn't need to dyno your car to know if that problem existed as it would be about as obvious as a punch in the face.
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Old 10-01-2014, 11:18 PM   #5
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Quote:
Originally Posted by stugray View Post
SWAG says that a table that kicks in right at 4500 is wrong.

Do you have a log?

Compare the Vishnu tune and the stock tune.
then compare OFT tune and the stock tune.

I think RR can even save the comparison IIRC
Can this be captured now that I'm off the dyno? I'd probably have to have the OFT plugged in, huh?

.ck
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Old 10-01-2014, 11:22 PM   #6
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Quote:
Originally Posted by Shiv@Openflash View Post
I don't think that dip is tune related. Looks like a dyno or Dyno operator problem to me. There is literally nothing in the tune file that would cause something like that. I'm willing to offer a free test of your car on a dynojet or mustang dyno to confirm.
I listened in while the car was on the dyno, it almost sounded like the car lost power and ramped quickly back up...all 4 times

.ck
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Old 10-01-2014, 11:24 PM   #7
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Quote:
Originally Posted by ck-GT86 View Post
I listened in while the car was on the dyno, it almost sounded like the car lost power and ramped quickly back up...all 4 times

.ck
And you attribute this to the tune that thousands of other people run? It's more likely to be caused by something else.
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Old 10-01-2014, 11:31 PM   #8
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Quote:
Originally Posted by Shiv@Openflash View Post
And you attribute this to the tune that thousands of other people run? It's more likely to be caused by something else.
I worry it could be something else, it was consistent on the 4 runs. Can I be any assistance to get you more info about my car? Maybe fuel is getting cut off? I dont know...

No hard feelings man

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Old 10-01-2014, 11:41 PM   #9
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Quote:
Originally Posted by Shiv@Openflash View Post
I don't think that dip is tune related. Looks like a dyno or Dyno operator problem to me. There is literally nothing in the tune file that would cause something like that. I'm willing to offer a free test of your car on a dynojet or mustang dyno to confirm.

Also a mustang dyno is capable of doing everything you describe with respect to the Maha dyno. And you wouldn't need to dyno your car to know if that problem existed as it would be about as obvious as a punch in the face.
How come this thread doesn't show how many times this post has been edited? Must be a vendor thing.

Anyways, I've never been on a dyno in my life. This was a first time thing, and again, I only went on to see what kind of gains I've gotten from all my bolt-ons.

In addition, my latest mod were ducts in my bumper -- it was a test to see if this mod was effective or not. Running a dyno isn't cheap, I could have saved $120 if I didnt think it was worthwhile. I didnt do it to bash on Vishnu, I had hopes I'd crack 205 to the crank (and I did). Wasn't expecting a dip at all.

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Old 10-01-2014, 11:41 PM   #10
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Quote:
Originally Posted by ck-GT86 View Post
I worry it could be something else, it was consistent on the 4 runs. Can I be any assistance to get you more info about my car? Maybe fuel is getting cut off? I dont know...

No hard feelings man

.ck
Why don't you call the office tomorrow and make an appointment to meet up. I can take a look at your car and datalog some pulls. If there is a problem unique to your car, it will be found. But judging my what I've read so far, I think the only problem is the info you have been given.
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Old 10-01-2014, 11:43 PM   #11
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@Shiv@Openflash how long are your runs when you dyno?
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Old 10-01-2014, 11:43 PM   #12
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Big thanks @Shiv@Openflash , I was told another tuner changed all of his maps after getting on the MaHa -- if this applicable to anyone else, so be it. Just want this resolved.

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Old 10-01-2014, 11:49 PM   #13
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@Shiv@Openflash how long are your runs when you dyno?
During standard tuning, about 10-20 second. During heavy loading torture testing, a run can take as long as 1 minute. Duration (ramp up rate) has no big effect on the way the car runs.

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Big thanks @Shiv@Openflash , I was told another tuner changed all of his maps after getting on the MaHa -- if this applicable to anyone else, so be it. Just want this resolved.
Then go to an independent dyno (one that isn't affiliated with an Ecutek tuner) to get an unbiased test and unbiased info/feedback. Because from the data presented here, and the tone of your claims (possibly due to the misinformation you were given), I am led to believe that something else is going on here.

If you want to take me up on my offer to run your car on a 3rd party dyno, let me know.

Shiv
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Old 10-02-2014, 12:05 AM   #14
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Quote:
Originally Posted by Shiv@Openflash View Post
During standard tuning, about 10-20 second. During heavy loading torture testing, a run can take as long as 1 minute. Duration (ramp up rate) has no big effect on the way the car runs.



Then go to an independent dyno (one that isn't affiliated with an Ecutek tuner) to get an unbiased test and unbiased info/feedback. Because from the data presented here, and the tone of your claims (possibly due to the misinformation you were given), I am led to believe that something else is going on here.

If you want to take me up on my offer to run your car on a 3rd party dyno, let me know.

Shiv
Absolutely will take your offer, thank you. Do you think I should upgrade to 2.061? I'm still on 2.0 beta

.ck
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