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Diesel Race tune : Went to the Dyno!

45494 Views 89 Replies 16 Participants Last post by  machusenpai
Following this thread : http://www.cruzetalk.com/forum/201-...cussion/196210-small-changes-reduce-heat.html

And after chatting with Corbin Murphy @ Fleece, i wanted to know how much power my car was making and if the 50hp tune was indeed stronger then the Race tune. (The tune you get when you delete)

So Corbin made a Tune that "should be the 50hp tune scripted over what you had." (The 50hp tune is one of the 3 tunes you get when you just tune a stock Diesel)

So here are the results : Land vehicle Vehicle Car Chevrolet cruze Motor vehicle
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https://youtu.be/1_zbidBTdsQ

1st of all, if you look in the picture where you see my car, on the blue shield its writen Mustang Dyno, so these are good numbers. The guy there never did a Cruze, didnt know Diesel existed and was quite impressed.

I was right! The 50hp tune is indeed more powerfull then the Race tune, but the amount of BLACK SMOKE you get is ridiculus, lol. The guys at Fleece did an incredible job on the Race tune to make it this powerfull with almost no smoke. On the Graph you can see the difference between the two tunes.

181hp and 296lbs of torque at the wheels for the 50hp dirty tune. The torque punch earlier too, its quite violent and funny when you drive.

173hp and 286lbs of torque at the wheels for the Race tune. Smoother driveability and no smoke.

Conclusion : I will use the 50hp tune only when i go Drag racing or to do stupid things. Its not worth it on the street for the difference with the Race tune.
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Discussion Starter · #3 ·
50 horse is fun but far to many regens, so been running 30 horse for almost 2 years constant.
still thinking of a full delete but the dam thing runs so good just the way it is with zero problems.

just bought a canyon diesel as well an going to give it a tune, also the transmission. Fleece guys are a pleasure to deal with!
If you didnt know, im already deleted. The 50hp tune that i have is an Hybrid between delete-race tune and the 50hp you get when stock.


And yes, 50hp tune is good for about 10min on a stock car b4 you get a Check engine light, lol.
 

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Discussion Starter · #7 ·
I smell fear.
Well, in about 2-3 weeks, when the weather is better here, i'll go on the 1/4 mile to test my car. Just do the same and we'll see!
 

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Discussion Starter · #9 ·
Nice numbers!
Probably has been covered before but what power range do they run in stock form?
Well, stock crank HP is 151 SAE certified, so i would say around 125-130hp at the wheels.
 

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Discussion Starter · #11 ·

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Discussion Starter · #13 ·
I have a video (not that it's much to watch - this was the quietest vehicle that day), and the chart, yes. I had to back-calculate torque, since we couldn't pick up RPM with the dyno. RPM is therefore also calculated.

But the dyno has wheel speed and corrected HP (so the HP isn't calculated), so it was easy to do.
Nice!

Those numbers seems to be in line with logic, especialy since its a Dynojet. Dynojet are always 5% over Mustang dynos in there results, so 136 would be 130 on Mustang and since i did 181 with 50hp tune, thats about exactly the right numbers.
 

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Discussion Starter · #15 ·
Yeah, that makes sense; the Mustangs always read a little bit lower. I was real happy with how it performed - certainly surpassing what the car is rated at.
Ya, GM are one of the only manufacturer to have SAE certified power, so its logical to expected decent numbers.
 

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Discussion Starter · #17 ·
The struggle is keeping Mr. TCM happy else it's gonna mess with how it behaves... I know Fleece has major issues with that.
What do you mean by that?
 

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Discussion Starter · #20 ·
Tcm refusing to engage the clutch.


Ya, i will probably buy a tune from Trifecta since they have a tune for the Tranny too.

The guys from Fleece told me that the majority of the time they would use it in Manual mode, so when i want to go full throttle its always in manual.
 

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Discussion Starter · #26 ·
https://en.wikipedia.org/wiki/AWTF-80_SC take your pick.

Look, they got a tune to work for the diesel, I really respect that. Something not very many people can pull off.

What I don't respect is how they sell their stuff. They live under the guise of borderline fraudulent statements like "increased combustion cycle efficiency" and make 100% false promises like that "it also gets rid of torque management". They will say the engine will throw gold out of the exhaust just to sell a few tunes.

That's all I'm going to say. I just don't want anyone to get hurt by them because they are promising to fix these transmission problems when they don't even understand how their own tune works.
Well, from both you guys say, i think im gonna stay with my Tranny stock tuned for now. Just gonna use Manual mode for Full throttle.
 

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Discussion Starter · #28 ·
What does the Wikipedia article mean...we all know what transmission it is...

Nothing in there says it cannot be tuned.
Im guessing he's saying they took a tune from another car with the same Tranny, like a Volvo or something.
 

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Discussion Starter · #29 ·
I challenge ye to a race.
I went to the track yesterday and here are the results, im car 108 :

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There ya go 15.4 @ 90mph!

Very happy with this, it was the last time i went racing with my Diesel, i tested everything i needed to test. :10:
 
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Discussion Starter · #34 ·
Very impressive! Which tune was this on?
The ugly tune, made a lot of Smoke, lol, was funny, people loved it.
 

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Discussion Starter · #37 ·
There's one close by it's just the Cruze is on a long trip at the moment. :dry:
Anyway, its the best a Cruze Diesel can do, unless it would be way more modified. (Bigger turbo, injectors, suspension, ect...)

But with more power, traction would be a big problem. Even at my power lvl i had difficulty hookin'up on a preped track with our open diff, that's with 225mm PZero tires, lol, so...
 

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Discussion Starter · #39 ·
You're lucky they prep your track. I have to deal with trying to launch my Cobalt (supercharged - so 14psi instantly off the line) on tracks that aren't prepped at all - that is unless I want to drive hours and get about one run in. Even with my 225 ZIIs it's impossible not to spin.
Ya, i was happy with the results and the people there were impressed too, both by the power and the Smoke, lol. My car doesnt have anything writen on it, quite the sleeper and when i did a run, there was so much smoke that when i finished and i cameback to the parking, there was still smoke in the air!

I was the only Cruze there and the only Diesel.
 

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Discussion Starter · #41 ·
I've kinda put my tunes into generations. I know some of the Gen 2 and 3 files are easily sub 15 second. But they have problems which the what I call the 'Gen 4' set out to solve.

I haven't really had the time yet to make a super powerful Gen 4 version yet. The one I do am working with is relatively smokeless and is fairly mild. Definitely not as wild as the earlier ones but some people like it a lot better.

Hey if you want to try it let me know. Although there's the whole.. Autocal issue.
From what the guys at Fleece told me, unless you change the Turbo, you cant have more power w/o big risk of boom.

They said that the Turbo was the most feeble part of our setup and when you do around 200-210hp at the crank, you are at maximum safe lvls and im right there.

So sub 15s with stock everything like i have? No way.
 

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Discussion Starter · #44 ·
Something's up with Fleece's tune. It really shouldn't smoke as much as it does. Not really sure what to say, it's not like I can look at it and say what they did wrong. I can only speculate...
lol, nothing is wrong!

This is not the normal Fleece tune, its a tune i asked for, an hybrid tune between the Delete race tune and the 50hp tune, i explain that in my 1st post.
 
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