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:Wanted to start off by thanking Greg Dupree. I ordered most of my parts through him and he was great to work with. He always got things shipped out to me the same day if it was something that I needed in a rush. It is nice to have somebody who puts such a sincere effort into helping you get your project taken care of. Thanks to Coz for providing his usual great customer service as well.
:So on to the results. I think my numbers are a little low, but I wasn’t going for any records, so I kept the tune very conservative for safety. As you can see, the runs were definitely on the rich side. Also, there weren’t any fans blowing on the intercoolers during the pulls. So although I did allow them to cool down between the runs, they weren’t getting any air during the pull, so they were noticeably hot after each pull. Ambient was about 75 degrees and very humid, SAE correction was used for all pulls. Timing was set at 15 degrees base timing, and fuel was a mixture of 100 unleaded and 110 leaded.
:First run with any real boost to see how the a/f looked. Very rich but that’s ok since I just needed a reference on this pull anyway:
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:After a few pulls gradually turning up the boost, here is my final run:
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:I did have one more pull after this one after I leaned it out little more between 5K & 5.5K and with the boost at 26 psi where the car made 475 RWTQ, but we got out of the gas early since the car was strained to push that much boost. As expected, my stock manifolds are definitely holding me back, I couldn’t have gotten the car to run more boost if I had wanted to. I would have liked to do the inconel manifolds this round, but I figured my bank account already took a big enough hit for the time being. I was hoping to reach 550 rwhp with this setup, so without the heatsoaked intercoolers and the rich tune I think I could have come close with a clean pull at 26 psi.
:I figured the car would run leaner on the street due to the heat soak on the dyno, so that was a big reason why I wasn’t trying to lean out the a/f as much. I have the AEM wideband installed in the car so I can keep an eye on things. On the drive home directly after the dyno, things were about 1/2 point leaner as expected. However last night when it cooled down about 15 degrees the car was significantly leaner. I had to add a bunch of fuel just to get the a/f back into the 12’s and to keep the EGT’s under control. Without a wideband and EGT gauge I definitely would have been in trouble.
:In summary, this car is a blast to drive, I am very happy with these turbos. Once the turbos first begin to spool the boost response is awesome. I don’t really notice the lag much because as you can see, the powerband is great. Every gear pulls extremely hard, and 2nd gear in particular is very surprising when my tires are warm enough to hook up.
:Here is the complete list of my mods so far:
:Engine:
:Twin pop intake (single maf)
:Stillen Intercoolers
:JWT ECU
:Nismo 740cc injectors
:95 fuel rails with machined lower plenum
:JWT 700 BB turbos
:Ported stock exhaust manifolds
:Koyo radiator
:Greg Dupree split runner 2.5" downpipes
:Stainless 2.5" midpipes
:Stillen 2.5" cat back
:RVM hard pipes
:Greddy type R bov's
:NGK copper plugs, heat range 7
:Electronics:
:Apexi AFC-II
:HKS EVC 4 limited edition
:AEM wideband O2 sensor & readout
:Defi BF boost gauge
:Defi BF EGT gauge
:Defi control unit
:Drivetrain:
:RPS Max 6-puck clutch
:SGP chrome moly clutch pivot ball
:Suspension:
:Ground Control coil overs (lowered about 1.5" all around)
:300 Degree front camber kit with extra shims
:Aluminum rear subframe spacers
:Wheels/Tires:
:SSR GT3 in bright satin finish
:18x8.5 front with 255/35/18 Pirelli PZero Nero
:18x10 rear with 285/30/18 Kuhmo Ecsta V700 (heat cycled)
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:Thanks for reading, and thanks Wagz for the picture hosting!
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Seems a little low at 1.4 bar.......my car with all its weird issues made 448rwhp and 448rwtq with the 530's at that level (couldnt go higher than that and hold boost).Right now im debating on whether I wanna keep these and get inconol manifolds or just port my stockers and get 700's or 2530's. Please post any new dyno tunes you get.
http://300zx.com/Image%20Gallery/Customer%20Cars/300ZX/Vincent%20Condry/pages/IM001523.htm |
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11:13:47 07/18/04
