Single Turbo RX-7's Questions about all aspects of single turbo setups.

My dyno with T-70

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Old Jul 25, 2005 | 08:52 AM
  #1  
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26.55 psi T04Z Monster
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My dyno with T-70

Banzai Racing Streetport
Water Injection
Garett T-70 @20psi
850's/1680's

Also does anyone know the max boost a Profec B is capable of?

I have video if anyone can host it.
Attached Thumbnails My dyno with T-70-dyno05.jpg   My dyno with T-70-dyno1.jpg  
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Old Jul 25, 2005 | 09:09 AM
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Turbo II FC's Avatar
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I know putfile can host it.
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Old Jul 25, 2005 | 09:52 AM
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http://www.putfile.com/media.php?n=111_1118

I think this is it.
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Old Jul 25, 2005 | 10:04 AM
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looks like you have some issues up top.. your torque drops as soon as it peaks.
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Old Jul 25, 2005 | 10:52 AM
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also a profec-b i know can do at least 30psi out of the box without any special setup. just gotta make sure you have a strong enough wastegate spring
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Old Jul 25, 2005 | 11:24 AM
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That turbo needs another 5-8psi, then it will come alive. My 67 has a vertical HP, and torque line at ~4500rpm, and then flat til redline@20, and 25 psi. What is your ignition advance, and split at 20 psi? Also AFR. What was the weather like, I see it is a STD vs SAE dyno. Carl
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Old Jul 27, 2005 | 09:29 PM
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Here is the Video: www.morningstarcomputer.net/video/dvideo1.avi
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Old Jul 28, 2005 | 11:23 PM
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Ouch...I'd definately look into whats happening there, i made that power when i had the 2.5in section on my exhaust, chopped it off and did 480rwhp at around that boost..something is up.
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Old Jul 29, 2005 | 12:09 PM
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Well it was at least 90 degs. out and I was super rich.
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Old Jul 30, 2005 | 08:51 AM
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Yes its slow
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It was near 100deg the day i went.
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Old Jul 30, 2005 | 12:11 PM
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Originally Posted by Slammedblk7
It was near 100deg the day i went.

This post is useless without pics......dyno graph
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Old Jul 31, 2005 | 12:56 PM
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Originally Posted by finnicky7
This post is useless without pics......dyno graph
You don't have to be rude, finnicky7. Eric's telling the truth; I was the one that was tuning the car both days. Once my FTP host comes back online, I'll link over the pictures.

B
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Old Aug 1, 2005 | 01:01 AM
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yea 90 degree temps isn't bad. if you are super rich then tune it. seems your problems might be elsewhere tho.
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Old Aug 1, 2005 | 07:30 AM
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Originally Posted by BDC
You don't have to be rude, finnicky7. Eric's telling the truth; I was the one that was tuning the car both days. Once my FTP host comes back online, I'll link over the pictures.

B
Sounds good. Maybe I have some ignition issues too. I haven't been hearing great things about the twin power lately.

Last edited by finnicky7; Aug 1, 2005 at 07:59 AM.
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Old Aug 3, 2005 | 11:01 PM
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Here you go, Finnicky7.

http://bdc.genxracing.com/Videos/DynoDay_060705/

B
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Old Aug 4, 2005 | 06:47 PM
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is this on 93 octane?
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Old Aug 4, 2005 | 07:00 PM
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Mine was on 93 octane.
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Old Aug 4, 2005 | 08:06 PM
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the chart looks more like a boost oscillation problem then an ignition problem to me.
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Old Aug 4, 2005 | 10:42 PM
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theres a litle bit of lag or sluggish timing but his graph isnt that bad. i think u guys are reading into it a little to much. i think we need to stop disecting every graph thats posted. besides its a crap dynojet dyno.
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Old Aug 4, 2005 | 11:41 PM
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What timing are you running? What standalone?
What wastegate spring? If you have, for example, a 9psi spring, the profec B will not make 20psi steady.

I just came back from the dyno tuning an Eclipse. It had a 12psi spring on the Tial wg, and the profec B was holding OK until about 22psi. Then the best I could do was spike 29psi and hold 24psi.
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