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Turbo Saturn dyno results


tristanlee85

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I had great pleasure today working with Brian and the crew at Dyno Tune Motorsports. There really isn't much to say other than I hit my goal of 250whp and I don't think I need to be going any higher if I want to keep this engine together.

 

Here are some specs on the car:

 

Stock 97 DOHC engine (9.5:1)

Custom log manifold

KKK K26 turbo (~.50ar/.73ar)

2" IC piping

2.5" open downpipe

 

MegaSquirt controlling fuel and spark

42lb/hr injectors

Walbro 225lph fuel pump

94 octane pump gas

 

I think that's about it. I don't know what else is important.

 

http://www.allash.com/Dyno.jpg

 

Video: http://www.tsnhosting.net/tristanlee85/dyno/17psi_pull-262whp-272wtq.mpeg (11.6MB)

3rd gear pull (1.207:1 ratio)

 

Thank you again Brian and the rest of your crew. You've definitely got my future business!

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Looks like you beat me to it.

 

Here are both graphs from both cars today. Thank you again for your business and let me know if I can be of any more help in the future.

 

 

http://24.26.129.28:50001/Dyno%20Graphs%20and%20Pictures./Dyno%20Graphs/Bill%20Saturn.jpg

 

http://24.26.129.28:50001/Dyno%20Graphs%20and%20Pictures./Dyno%20Graphs/Tristan.jpg

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Congratz thats a potent little saturn. Wanna roll sometime ?

 

How does your car compare to a softly modded STI? I went up against one not too long ago. All he had was an aftermarket turbo manifold. Though he definitely got me off the line, I was ahead of him in the end.

 

Is yours an STI? I don't know anything about cars other than mine.

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How does your car compare to a softly modded STI? I went up against one not too long ago. All he had was an aftermarket turbo manifold. Though he definitely got me off the line, I was ahead of him in the end.

 

Is yours an STI? I don't know anything about cars other than mine.

 

 

I'm not an STI .

 

 

Last dyno

280awhp

BEFORE NEW PARTS

 

BTW a properly tuned up/down STI should put you in a world of hurt. Driver Gasket?

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How does your car compare to a softly modded STI? I went up against one not too long ago. All he had was an aftermarket turbo manifold. Though he definitely got me off the line, I was ahead of him in the end.

 

Is yours an STI? I don't know anything about cars other than mine.

 

:bs:

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12.0 a/f with only 4-6psi is not bad at all....you're fine.

 

Thats a very very generic statement

 

 

Timing + AFR + Boost + temp = what knock

 

Thats all I was saying. I agree 100% lean is mean. BUT a tank of bad gas could be bad.

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Thats a very very generic statement

 

 

Timing + AFR + Boost + temp = what knock

 

Thats all I was saying. I agree 100% lean is mean. BUT a tank of bad gas could be bad.

 

I agree a tank of bad gas and you could be in a world of hurt! If there is not too much timing in the motor then it could be alright.

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I'm not an STI .

 

 

Last dyno

280awhp

BEFORE NEW PARTS

 

BTW a properly tuned up/down STI should put you in a world of hurt. Driver Gasket?

 

Properly tuned and I believe it. I didn't know this guy personally. Only enough to know what was done and that's all that was mentioned.

 

My friend's car (not the one I dyno'd with) made 276whp. Granted he can drive 100% better than me and has slicks, and gutted a bit, ran 11.809 @ 116.488mph. Though there is no way could I compete with that, at 2410lbs, I wouldn't be that bad.

 

Not trying to start a BS flag-throwing contest. Just stating the facts I know and my theories.

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I agree a tank of bad gas and you could be in a world of hurt! If there is not too much timing in the motor then it could be alright.

 

Off the top of my head I don't remember what it was where you guys are talking about, but 165kpa and up is 25* @ ~4000 to 28* @ 6000.

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Thats a very very generic statement

 

 

Timing + AFR + Boost + temp = what knock

 

Thats all I was saying. I agree 100% lean is mean. BUT a tank of bad gas could be bad.

 

The load associated with 4-6 psi @ 3500-400 on a 9.5:1 dohc shouldn't require sub 12.0:1 ratios. Keep in mind flame speed is peak @ 13:1, further you move away from it in either direction, slower the flame gets. The compressor is most likely in a post 65% efficiency range while the turbine isn't a chokepoint and most likely climbing in efficieny as the PR is nearing 2:1 with the log manifold.

 

Usually best power/safety is found with a lambda of 1.0 @ 80kPa (stoich), .92 @ 85kPa (13.5:1), .86 @ 90kPa (12.6:1), .81 lambda @ 120kPa (11.9:1)

 

Tristan - what do your intake temps look like as I ASSume you are running Speed Density? I would work on maintaining 11.9-11.5:1 until redline IF your setup isn't producing a large intake temp spike or your car isn't running a cat(s).

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Thats about what my SRT-4 ran timing wise up top...

 

I would be cautious with comparing timing #s as one could assume large differences in head design, squish, quench, compression, lamda, etc. Best to make a few pulls and let power/EGT tell you what she likes and verify with a standard knock sensor if the option is available.

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