Dynamometer Results & Comparisons Dyno Records | Dyno Discussion | Dyno Wars

MY Dyno Woes...

Old Apr 22, 2009 | 01:54 PM
  #21  
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Originally Posted by blu1
So 4 hours distance = that huge of a correction factor difference? Something shady is going on with that shops weather station. No way it should be 1.14 or 1.09 for that matter.
Houton is at sea level... We are 1000 feet up... probably the difference...
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Old Apr 22, 2009 | 08:05 PM
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I plan on going to Sunshine this Friday to dyno tune my car.I have full confidence in Mike on tunning my car. I had been doing the same as you going to Houston to get work done.Mike not only dyno's your car but he is also going to track with me to do some fine tunning after the dyno session.I have talked with him a number of times and he has answered all my questions, and has been straight forward with me.I have no answer for you on the problem your dealing with,but with new injectors you need a tune on it before driving around. The other thing I'm not sure of is with bigger injectors wouldn't you need a higher volume fuel pump involved. I'm sorry I'm no help but I would stay close to home before running back to Houston.
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Old Apr 22, 2009 | 11:02 PM
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[QUOTE=jwillburn119;11465051]In sequence


LMR tune



I will have Steven post more in the morning as it is late and I am ready to go home. But if you notice the Corection factor on our dyno is where it should be and like someone else pointed out this sunshine place is 1.14 and 1.09 Second if you notice the Green dyno pull which was number 2 was the second pull once it arrived at My shop (we always do 2 baselines) is the one that is pig rich. The blue pull which was number 8 the air fuel is right where it needs to be right around 12.75-12.5 to 1. Which is safe. It might be hard to see, but it is right along the dashed red line. That is the tune the car left the shop with. Also I just noticed the barometric pressure in the original dyno graph is 25.55 in-hg. I mean was the dyno in the eye of a tornado!!!! I really think that something else is going on here. Like I said I will have Steven elaborate more in the morning
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Old Apr 22, 2009 | 11:18 PM
  #24  
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Default Hey again

I am glad you at least posted on the topic... I can have Mike get on here I am sure to back me up... but the first baseline run that he did with your tune showed 10 flat... which backs up the driveability issues that I had with the car... Thats my biggest concern... The reason I did not go back to you for the problem in the first place was because I thought it was a minimal issue that I could deal with at my level... IE an O2 sensor or something... not anything big like a screwed up fuel curve... I don't know ANYTHING about the correction factor, but like I said, I will ask... I dont know why the Baro is so far off... there is no way it was ever that low... 28 is as low as I have seen it here... (aviation)

The issue is what the driveability was, and what it is now... I'm not nearly as worried about the power its making, as I am about how it runs, and what that curve looks like... if it had a distributor and a carb on it, I would have started turning that timing out of it, and i would have changed the jets just by the way the car was running... I know black means rich, and stutter means rich/timing, I know that 200 miles to a tank in an M6 car with 3.42s and 358 HP is bad, and i know milky oil means water or fuel... so I hope you understand my complaints... maybe you hit a wrong key... who knows...

All you are doing is furthering my point... this guy might not know his dyno from a hole in his ***...(sorry Mike) but my car is running right.

i don't see how a correction factor would throw the curve off... the curve of the torque should stay the same unless something changed inside the engine right?

Last edited by jwillburn119; Apr 22, 2009 at 11:34 PM.
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Old Apr 22, 2009 | 11:20 PM
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Originally Posted by FASTRAKTA
I plan on going to Sunshine this Friday to dyno tune my car.I have full confidence in Mike on tunning my car. I had been doing the same as you going to Houston to get work done.Mike not only dyno's your car but he is also going to track with me to do some fine tunning after the dyno session.I have talked with him a number of times and he has answered all my questions, and has been straight forward with me.I have no answer for you on the problem your dealing with,but with new injectors you need a tune on it before driving around. The other thing I'm not sure of is with bigger injectors wouldn't you need a higher volume fuel pump involved. I'm sorry I'm no help but I would stay close to home before running back to Houston.
The car had to have a tune to run on the new injectors... there is no way a car will run on heavier injectors... as far as I understand... but I definately did... that was the whole reason I went to LMR... And I have the racetronix setup in the car already... the deployment F-ed my stock one... (from sitting)

Last edited by jwillburn119; Apr 22, 2009 at 11:35 PM.
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Old Apr 24, 2009 | 12:50 PM
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First let me start by saying I believe this is the first negative feedback I have read about us on the internet. Here is the dyno graph of the your car. You can clearly see how bad the tune was when it came to us, and how perfect the airfuel was when it left. This is your first and last dyno run at LMR:






You then call me up a month later to tell me that your car was running bad. I said no problem, just bring it back in and I will take care of it 100%. Then you tell me you already had it retuned by someone else. Once you did that, I do not know what you were expecting from me. You then tell me how the car was running so bad yet you drove 4 hours home without a single problem. When I asked you why didnt you turn right back around if the car was running so crappy you then tell me it ran good for a week and then started acting up, which could be caused by a bad 02 sensor or in this case you trying to use your hand held diablo to tune the car(which I dont know because I am not there or a million other factors. I just think its funny you get on here and say how bad of a tune we did when you can clearly see your dyno graph looks absolutely perfect when it left. Im not saying they are good rwhp #'s but we didnt build the car or select any of the parts in it because if we did it sure as hell would be making more power than that.

Last edited by Worm Boy; Apr 24, 2009 at 03:10 PM.
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Old Apr 24, 2009 | 03:07 PM
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Wow! That should all but wrap this up as there really isn't much more that can be said.
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Old Apr 24, 2009 | 04:04 PM
  #28  
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Default actually...

First of all, if you tuner listened to me when I got there, Which he didn't, he would have known that the car had been put into "safe mode" or whatever you want to call the detune that the ECM forces on the system whenever the knock sensor is tripped...

Since we are making assumptions... (my diablo sport usage) I didn't say that I used it, and in fact, I pointed out that If I did, I was worried that it would screw something up... its in my storage... where it has been since 2006 when I had my car tuned the first time.

I suppose we will assume that this is my dyno sheet... I suppose I will also assume that there were no further "changes" made after these runs...
Everyone makes mistakes... not everyone will own up to them.

My drive home was pretty much smooth... I was following an FJ Cruiser... my wife, who I brought down there... I immediately went to school upon return to Killeen, so it took me awhile to get around to dealing with the car, and I took the logical steps of making sure it wasn't my fault before I called you back. I called all week the week before I had the car retuned, but there was no answer... I know you are all busy... so I understand that.

Why would I come back to you when you shortchanged me 3 times?

What I expected from you would be a simple acknowledgment of error. Better than the F-you get lost that I got when I called... Its not less than I expect now though.

I will have the person that tuned give his .02 as to what the car looked like when he pulled it the first time. Though this entire thread is Hearsay... I am not out to kill your business... as I said on the phone when I last talked to you, more like open your eyes.

One more thing... explain the change in the torque curve between your last run, and a run 4 weeks later?

Last edited by jwillburn119; Apr 25, 2009 at 03:43 PM.
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Old Apr 24, 2009 | 04:07 PM
  #29  
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Originally Posted by blu1
Wow! That should all but wrap this up as there really isn't much more that can be said.

except that nothing was explained... just some half logic and hearsay...

No offense intended toward you
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Old Apr 24, 2009 | 09:30 PM
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So what injectors were in the car when LMR tuned the car and what was in it when SunShine tuned it? When did you swap the injectors and how far did you drive it before it was tuned for the new injectors?
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Old Apr 25, 2009 | 03:42 PM
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Default la la la...

Although it is already explained in the previous posts...

I drove to houston with stock injectors in it... the 42# injectors were replaced on site at LMR... it was tuned... and I drove it home... with 42# injectors...

It was never driven on the new injectors without a tune... I dont believe the car would even run with that much a difference in injectors without being tuned...
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