Only 5-10 RWHP from Dyno Tune????
10-21-2003, 11:02 AM
#1
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Location: Clearwater, FL
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Only 5-10 RWHP from Dyno Tune????
I called a well repsetced Dyno Tuner yesterday asking about what they can tune for. Probably the same company many of us in the midwest have used. I was told pretty much what I expected to hear before I asked him how much RWHP I could see from it. He said with their wideband O2 Dyno tuning ($400) I would see 5 or 10 RWHP. Isn't PCM4less giving guys 25rwhp with a heads/cam car? What's the deal????
Brad
Brad
10-21-2003, 11:09 AM
#2
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Join Date: Feb 2002
Location: Bridgewater, MA
Posts: 5,645
Just leaning my car out with the regulator I gained the following power/torque:
rwhp rwtq
2200 9.1 21.7
2300 12.2 27.8
2400 14.0 30.6
2500 15.6 32.8
2600 16.6 33.4
2700 15.1 29.4
2800 13.8 25.8
2900 12.3 22.2
3000 13.2 23.1
3100 13.9 23.4
3200 12.8 21.0
3300 9.8 18.7
3400 12.1 18.7
3500 12.7 19.1
3600 12.3 17.9
3700 12.8 18.3
3800 13.2 18.3
3900 14.5 19.6
4000 18.7 24.6
4100 20.6 26.4
4200 20.1 25.2
4300 19.6 23.9
4400 15.2 18.2
4500 13.5 15.7
4600 14.7 16.8
4700 16.8 18.8
4800 16.7 18.2
4900 16.0 17.2
5000 17.8 18.7
5100 18.4 18.9
5200 18.9 19.1
5300 18.1 18.0
5400 18.4 17.8
5500 18.2 17.4
5600 14.3 13.4
5700 15.1 13.9
5800 14.6 13.2
5900 14.0 12.5
6000 14.6 12.8
6100 14.3 12.4
6200 13.9 11.7
MAX 20.6 33.4
rwhp rwtq
2200 9.1 21.7
2300 12.2 27.8
2400 14.0 30.6
2500 15.6 32.8
2600 16.6 33.4
2700 15.1 29.4
2800 13.8 25.8
2900 12.3 22.2
3000 13.2 23.1
3100 13.9 23.4
3200 12.8 21.0
3300 9.8 18.7
3400 12.1 18.7
3500 12.7 19.1
3600 12.3 17.9
3700 12.8 18.3
3800 13.2 18.3
3900 14.5 19.6
4000 18.7 24.6
4100 20.6 26.4
4200 20.1 25.2
4300 19.6 23.9
4400 15.2 18.2
4500 13.5 15.7
4600 14.7 16.8
4700 16.8 18.8
4800 16.7 18.2
4900 16.0 17.2
5000 17.8 18.7
5100 18.4 18.9
5200 18.9 19.1
5300 18.1 18.0
5400 18.4 17.8
5500 18.2 17.4
5600 14.3 13.4
5700 15.1 13.9
5800 14.6 13.2
5900 14.0 12.5
6000 14.6 12.8
6100 14.3 12.4
6200 13.9 11.7
MAX 20.6 33.4
10-21-2003, 11:12 AM
#4
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Location: DeKalb, IL
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I'm really not sure about which company you're talking about, but one member on this board I did a tune for a while ago, also went for dyno tuning to a known shop in the midwest and sent me the file after he did the tuning (numbers were a little low) and I noticed the fuel ratio in the new "dyno-tune" was the EXACT same one that was in the original tune I did for him. Maybe I'm simply perfect.... 
Or maybe....
Or maybe....
10-21-2003, 11:16 AM
#5
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Location: DeKalb, IL
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Originally posted by kmook
He is probably assuming your tune isnt real far off from optimal.
He is probably assuming your tune isnt real far off from optimal.
10-21-2003, 11:33 AM
#8
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Location: DeKalb, IL
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I definetely think there's more to be gained from a tune than 5 RWHP.
Just get your car dynoed with some air fuel ratio readings, then you can send the sheet along with your specs to the programmer of your choice.
Just get your car dynoed with some air fuel ratio readings, then you can send the sheet along with your specs to the programmer of your choice.
10-21-2003, 11:35 AM
#9
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Join Date: Apr 2002
Location: Clearwater, FL
Posts: 397
Just leaning my car out with the regulator I gained the following power/torque:
Also Madwolf, the fact that you are often on the board helping out members has convinced me to use your tuning instead of your competitors.
Brad
10-21-2003, 11:37 AM
#10
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Join Date: Jul 2001
Location: DeKalb, IL
Posts: 4,577
Thanks Brad.
To answer your question about the regulator adjustment.... You're right. The adjustment is only temporary until the PCM learns the new settings. You can always keep reseting it, but is that the right way to do it? ....
To answer your question about the regulator adjustment.... You're right. The adjustment is only temporary until the PCM learns the new settings. You can always keep reseting it, but is that the right way to do it?
....
10-21-2003, 11:41 AM
#11
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Location: Bridgewater, MA
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From what I have read, the computer will adjust it some, but wont bring it back to where it was. It was using a correction factor @ WOT, so by changing the A/F it still uses the same correction factor (but the end result is different do to chaing the PSI). This was explained better to be by another board member. Either way, I am rehitting the dyno Sat. and we'll se if Ion can hit the tuning on the head 
I just need to log some data tonight for him, and install my 1.7RR's. I can tell you it hasnt gone back to the pig rich 368rwhp cuz I am running 3mph faster than before I played with the regulator. Something is going on
I just need to log some data tonight for him, and install my 1.7RR's. I can tell you it hasnt gone back to the pig rich 368rwhp cuz I am running 3mph faster than before I played with the regulator. Something is going on
10-21-2003, 11:53 AM
#13
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Location: Bridgewater, MA
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Originally posted by madwolf
The PCM has about 10% tolerance in learning, so anything over that, it will not compensate. That's how you're getting more power (but not all of it).
The PCM has about 10% tolerance in learning, so anything over that, it will not compensate. That's how you're getting more power (but not all of it).
too. It goes to show you though, that by going from 10:1 to 12.5:1 I gained all that power and torque (whether leaned out by programming or manually).
10-21-2003, 12:04 PM
#15
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Location: Bridgewater, MA
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Depends. At the stock fuel pressure the stock injectors work pretty hard (duty cycle gets high depending on combo). You could increase fuel pressure and the injector pulse with decrease to maintain the A/F. This decreases duty cycle. I am installing my blower, so high fuel pressure will help make up for undersized injectors. I like the option of being able to increase fuel pressure to help lower the duty cycle of the injectros (if they were maxed out).
It isnt needed though, just to answer your ?.
It isnt needed though, just to answer your ?.