Dissapoined after mods
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Teching In
Joined: Jun 2002
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From: Detroit
Dissapoined after mods I just had a TR 230 cam,Mac headers,ASP pullie,TR ported TB,K&N FIKN,Gran. MAF,and a computer tune.All of this money to get a whopping 330RWHP on a Mustang Dyno at Detroit Speedworks.I dont know if that number was corrected, It was 90+ degrees during testing.The car feels really feels strong, But car searches for an idle a little bit.
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Joined: Nov 2001
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From: Green Oak, MI
Re: Dissapoined after mods Did DSW put a G-maf on the car and tune it?
Doesn't sound right to me, G-mafs, regardless of their lack of merits or their merits don't make sense on a tuned car, you just tune around all that, get a truck MAF, bigger, cheaper, same flow.
Doesn't sound right to me, G-mafs, regardless of their lack of merits or their merits don't make sense on a tuned car, you just tune around all that, get a truck MAF, bigger, cheaper, same flow.
Staging Lane
Joined: May 2002
Posts: 81
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From: Grand Rapids, Michigan
Re: Dissapoined after mods </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by 01DetroitSS:
<strong>I just had a TR 230 cam,Mac headers,ASP pullie,TR ported TB,K&N FIKN,Gran. MAF,and a computer tune.All of this money to get a whopping 330RWHP on a Mustang Dyno at Detroit Speedworks.I dont know if that number was corrected, It was 90+ degrees during testing.The car feels really feels strong, But car searches for an idle a little bit.</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Well, you have to find out if it was corrected or not.
Example: an air temp of 95F, an absolute pressure of 26 inches mercury, and a vapor pressure of 0.12 will make a correction factor of 1.175. If uncorrected was 330, and the corr factor was 1.175, corrected numbers would be 388rwhp. I just made up 26 in-hg and 0.12 vapor pressure, I have no idea what yours were.
Uncorrected numbers are kind of worthless.
<strong>I just had a TR 230 cam,Mac headers,ASP pullie,TR ported TB,K&N FIKN,Gran. MAF,and a computer tune.All of this money to get a whopping 330RWHP on a Mustang Dyno at Detroit Speedworks.I dont know if that number was corrected, It was 90+ degrees during testing.The car feels really feels strong, But car searches for an idle a little bit.</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Well, you have to find out if it was corrected or not.
Example: an air temp of 95F, an absolute pressure of 26 inches mercury, and a vapor pressure of 0.12 will make a correction factor of 1.175. If uncorrected was 330, and the corr factor was 1.175, corrected numbers would be 388rwhp. I just made up 26 in-hg and 0.12 vapor pressure, I have no idea what yours were.
Uncorrected numbers are kind of worthless.
Staging Lane
Joined: May 2002
Posts: 81
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From: Grand Rapids, Michigan
Re: Dissapoined after mods </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by 01DetroitSS:
<strong>...and a computer tune.</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Who did the tuning, and how did they do it? Did they use a wideband O2 on the dyno? If so, ask to see the air/fuel data.
<strong>...and a computer tune.</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Who did the tuning, and how did they do it? Did they use a wideband O2 on the dyno? If so, ask to see the air/fuel data.
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From: Green Oak, MI
Re: Dissapoined after mods The data provided should have been corrected and they do have a wideband to tune with there, along with Ls1 Edit.
Of course all the toys doesn't neccessarily mean your fun to play with <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />
Of course all the toys doesn't neccessarily mean your fun to play with <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />
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Re: Dissapoined after mods Mustang brand dynos always give much lower results than a Dynojet brand one. I'd locate a Dynojet and have it redynoed before worring about it.
Tony
Tony
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Re: Dissapoined after mods Wow, those numbers seem pathetic to me. MD or dyno jet there is not that big of a difference. Greg needs to dig into that a little deeper. At least go to the track and check out your trap speeds, that would be the real test.
<img border="0" alt="[Camaro]" title="" src="graemlins/camaro.gif" />
Tom
<img border="0" alt="[Camaro]" title="" src="graemlins/camaro.gif" />
Tom
Re: Dissapoined after mods Also, you need to have an EXTREMELY free-flowing exhaust for this cam, i.e open headers or collectors to a 3" cutout or turndowns. This cam needs lots of good exhaust flow.
Re: Dissapoined after mods </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by 01DetroitSS:
<strong>Iam going to install my electric cutout on Thursday. Will this affect my a/f ratio alot, I dont want to have to retune my car, its not cheap.</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">The speedworks dyno will give you a pretty low read (but it will be dead nuts accurate). Most stock LS1 cars put down about 300 on that dyno. You seem a few short, though. Did they program at Speedworks also?
-Geoff
<strong>Iam going to install my electric cutout on Thursday. Will this affect my a/f ratio alot, I dont want to have to retune my car, its not cheap.</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">The speedworks dyno will give you a pretty low read (but it will be dead nuts accurate). Most stock LS1 cars put down about 300 on that dyno. You seem a few short, though. Did they program at Speedworks also?
-Geoff
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From: Fort Worth,TX
Re: Dissapoined after mods </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by Nine Ball:
<strong>Mustang brand dynos always give much lower results than a Dynojet brand one. I'd locate a Dynojet and have it redynoed before worring about it.
Tony</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Yes I too thought it gave lower numbers.
<strong>Mustang brand dynos always give much lower results than a Dynojet brand one. I'd locate a Dynojet and have it redynoed before worring about it.
Tony</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Yes I too thought it gave lower numbers.
Re: Dissapoined after mods IMO, worry about how the area under the curve is vs. just the peak number. Give me a lower number as an average over the whole pull vs. a "peaky" car with a higher peak number, i.e., give me a "curve" that looks like a high plateau than a mountain/hill with a bit taller peak. If you have a loose converter, you will probably show a lower peak number than a similar car with a tight/stock converter but your over all area may be higher (could be substantially).
That's why I don't chase or race dyno numbers. Too much variation between dynos, corrections, combos, and how the numbers are quoted. Take care.
That's why I don't chase or race dyno numbers. Too much variation between dynos, corrections, combos, and how the numbers are quoted. Take care.
Re: Dissapoined after mods I dynod on a mustang dyno and then right on a dynojet......no changes..same gas and all except no cool off on the dynojet....results
mustang 471/542
dynojet 518/592...with no cool off so it could have been higher. I like the Mustang dyno way better...the data collecting capabilities are awesome and the way they load your car is better for setting your a/f...no need to adjust for load on the street like you would with a dynojet
mustang 471/542
dynojet 518/592...with no cool off so it could have been higher. I like the Mustang dyno way better...the data collecting capabilities are awesome and the way they load your car is better for setting your a/f...no need to adjust for load on the street like you would with a dynojet
Re: Dissapoined after mods Don't forget that location, temp, humidity, and heat soak have alot to do with fluctuation of numbers. I dynoed here in Tampa and pulled 318/332 and then a month or so later, I dynoed in Atlanta with the exact same set up, and pulled 306/318.
This was on a bone stock 2000 SS A4. It was hotter and higher elevation in Atlanta, btw. The dyno in FL was done when I drove over an hour and pulled right into the bay from the drive there... I was 5 minutes late for my slot, so I had no cool down time.
Both dyno's were dynojets.
Dino
This was on a bone stock 2000 SS A4. It was hotter and higher elevation in Atlanta, btw. The dyno in FL was done when I drove over an hour and pulled right into the bay from the drive there... I was 5 minutes late for my slot, so I had no cool down time.
Both dyno's were dynojets.
Dino
Re: Dissapoined after mods I dynoed 300/300 hp/tq on that dyno, with only bolt ons, but proceeded to run 11.5 that very week.. So dont put much faith in the dyno. As stated, take it to the track & see what your MPH is like.
Thread Starter
Teching In
Joined: Jun 2002
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From: Detroit
Re: Dissapoined after mods Greg told me that stock f bodies were only pulling like 260 rwhp on the DSW dyno.He also said that he had a Viper only pull 360 with a catback and induction system. has anybody dynoed there car there stock and what were your numbers.My mistake not to have the car dynoed stock.