H/C cars inside..
11-12-2002, 11:08 AM
#1
H/C cars inside.. What is the big secret? I asked this question a long time ago and a few responded.. What does everyone see when they check their MAF Rate at full throttle with 28lb injectors? This is not a tuning question. I want to know what H/C cars are seeing.. We have cars that dyno from 380rwhp to 455rwhp on 346ci H/C cars.. The MAF Rate has to be relevant. I hear that for every 10lbs/min = 10 rwhp or something like that.. If this is remotely true then it would be interesting to see how much the high horsepower cars are taking in.. Thanks in advance..
11-12-2002, 03:47 PM
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Re: H/C cars inside.. I tried logging the flow rate today but ATAP crashes with an error when I try to play back. I will download the newest version and install it tonight. On a good note it was fun doing a WOT run in third to 7000rpm <img border="0" alt="[devil]" title="" src="graemlins/gr_devil.gif" />
Cheers,
Chris
ps when comparing this data it will be good to know the gear, rpm, rear axle gear, and weather.
also a stock MAF must be used (screened stock MAF preferrably as a descreened stocker like I have will show slightly less reading)
<small>[ November 12, 2002, 03:58 PM: Message edited by: Chris ARE 360 ]</small>
Cheers,
Chris
ps when comparing this data it will be good to know the gear, rpm, rear axle gear, and weather.
also a stock MAF must be used (screened stock MAF preferrably as a descreened stocker like I have will show slightly less reading)
<small>[ November 12, 2002, 03:58 PM: Message edited by: Chris ARE 360 ]</small>
11-12-2002, 04:46 PM
#6
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Re: H/C cars inside.. I will have to check for that one day. I used to get "MAF High Frequency" codes all the time when I had ported MAF ends but with the stock descreened ends I do not.
Justin
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11-12-2002, 07:38 PM
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Re: H/C cars inside.. Above 6K rpms at WOT, I was only seeing between 37-41 lbs..
Traffic was out of line today, so I only got to go WOT in 1st and 2nd gear.
I'm not sure how much of a difference there would have been in 3rd and 4th gears. <img border="0" title="" alt="[Confused]" src="images/icons/confused.gif" />
I have a stock MAF sensor.
<small>[ November 12, 2002, 07:41 PM: Message edited by: verbs ]</small>
Traffic was out of line today, so I only got to go WOT in 1st and 2nd gear.
I'm not sure how much of a difference there would have been in 3rd and 4th gears. <img border="0" title="" alt="[Confused]" src="images/icons/confused.gif" />
I have a stock MAF sensor.
<small>[ November 12, 2002, 07:41 PM: Message edited by: verbs ]</small>
11-12-2002, 08:12 PM
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Re: H/C cars inside.. An 'old wives' tale' that I once heard (in the LT1 world) was that 1 g/sec ~ 1.1 rwhp M6.
So, if you were pulling ~350 g/sec, you'd rw dyno about 385-390 RWHP.
It's up to you to convert g/sec to lb/min. <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" />
-Andrew
So, if you were pulling ~350 g/sec, you'd rw dyno about 385-390 RWHP.
It's up to you to convert g/sec to lb/min. <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" />
-Andrew
11-12-2002, 10:44 PM
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Re: H/C cars inside.. I use an SLP 85 mm MAF, I haven't really dynoed with the stock one, I might try it though to see what kind of difference there might be..
11-12-2002, 11:30 PM
#11
Re: H/C cars inside.. </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by BIGBOS:
<strong>I use an SLP 85 mm MAF, I haven't really dynoed with the stock one, I might try it though to see what kind of difference there might be..</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">The SLP 85mm MAF was worth 6rwhp over the screened stock unit on my car.
<strong>I use an SLP 85 mm MAF, I haven't really dynoed with the stock one, I might try it though to see what kind of difference there might be..</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">The SLP 85mm MAF was worth 6rwhp over the screened stock unit on my car.
11-13-2002, 12:02 AM
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Re: H/C cars inside.. I'll autotap on the way home from work.... <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />
I have plenty of on ramps to work with <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />
I have plenty of on ramps to work with <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />
11-13-2002, 12:09 AM
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Re: H/C cars inside.. </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by Camaroholic:
<strong>An 'old wives' tale' that I once heard (in the LT1 world) was that 1 g/sec ~ 1.1 rwhp M6.
So, if you were pulling ~350 g/sec, you'd rw dyno about 385-390 RWHP.
It's up to you to convert g/sec to lb/min. <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" />
-Andrew</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">i GOT 336rwhp by those calcs for my LS1...don't think it works too well <img border="0" title="" alt="[Razz]" src="gr_tounge.gif" />
<strong>An 'old wives' tale' that I once heard (in the LT1 world) was that 1 g/sec ~ 1.1 rwhp M6.
So, if you were pulling ~350 g/sec, you'd rw dyno about 385-390 RWHP.
It's up to you to convert g/sec to lb/min. <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" />
-Andrew</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">i GOT 336rwhp by those calcs for my LS1...don't think it works too well <img border="0" title="" alt="[Razz]" src="gr_tounge.gif" />
11-13-2002, 12:21 AM
#16
Re: H/C cars inside.. Thanks guys.. I think it is closer to the 10lbs=10rwhp thing.. Mine reads 39 to 40lbs consistently and when I had my LS6 MAF on it read up to 44lbs to 46lbs, but I do not think that was accurate. The screen was out of it.. That puts me about 400rwhp with my cutouts closed..