Precision Raceworks LIVE BUILD EVENT!

[V8bait]

Well, 400wtq at 2500rpm. The GC2.0 certainly can spool. Looks like @V8bait was purposely limiting boost/load until 3750rpm too where he allowed the turbos to build a full 27.5psi and hit 560wtq.

I wonder what the limit was. Trans? Fuel? Time?

They were having traction issues (dynos in 5th fyi but 4th is equally impressive), so I brought in boost progressively and down low I was only targeting like 15psi. This was the first (and only!) revision and probably second or third run over 5,000rpm, higher we revved more it picked up. Boost should be about 15psi at early spool, then 20 ramping to like 26 or 27 up top. Timing was real conservative and fuel was very rich (fancy new lpfp pressure regulator is set a little high lol).

Basically, it was 4am due to daylight savings change, the first log showed everything working with zero timing corrections just too rich, so in the spirit of TX2K we sent it. I mean if it's too rich the best fix is add more boost (don't quote me on that). For a single revision it did awesome and I had a lot of faith in the work everyone had done and the parts on the car. 660whp STD not bad, I hope Robert posts the others.

 

[Jeffman]

Impressive.

 

[derekgates]

Damn impressive results! I missed the live build, unfortunately. Looks fantastic!

 

[doublespaces]

18 hours later..

Meanwhile, I'm over here 18 months later.

 

[dyezak]

I'm really appreciative of these vendors coming together to do this. I think I've bought something from each one of them in the past and will continue to patronize their establishments virtually through the magic of the interwebs.

 

[BMP-PrecisionRaceworks]

Unfortunately, due to the radio being on in the background... The video is being blocked by YouTube. So we won't have any replays until it is edited with most sound removed.

 

[langsbr]

Wow that is just nuts. Thanks RIAA!

 

[dyezak]

You can petition YouTube and they can review the vid and issue an exclusion. Kind of normal now.

 

[lamia2super]

feed/build is cool

 

[doublespaces]

You can petition YouTube and they can review the vid and issue an exclusion. Kind of normal now.

Wonder how long that takes. So it appears they can make an exception perhaps if the sound is incidental and not a primary component of the audio track? I've been flagged before, but it has been from re-uploading press kit media package videos which included copyrighted songs.

 

[veer90]

I was just gonna comment asking why it was blocked. Bullshit ass RIAA/DMCA/whatever

 

[veer90]

Well, 400wtq at 2500rpm. The GC2.0 certainly can spool. Looks like @V8bait was purposely limiting boost/load until 3750rpm too where he allowed the turbos to build a full 27.5psi and hit 560wtq.

I wonder what the limit was. Trans? Fuel? Time?

Torque limit down low so you don't pretzel the rods on a stock motor.

 

[Red90]

wow that is a lot of low end torque, lol,I imagine these are the rods expression at 2500rpm

 

[V8bait]

So here's the log for the 660whp run, I'll go ahead and post the full thing unedited so feel free to try to steal mah tablez. It's the first revision from 4am after a 19 hour build but I think it's acceptable. https://datazap.me/u/v8bait/pr-whit...ta=3-5-6-7-8-9-10-11-15-16-22-26&zoom=200-279

Boost was 24.4psi peak, timing ramp was 6.5 to 10 degrees (peak power was below 10 degrees advance), and boost was ramped in for traction/torque control. Run was 5th gear due to spin and tuning purposes, 4th gear dyno was 640whp on this map. Ohh and this was on one fuel pump, the regulator assembly that is being tested in this car was being finicky so we just sent it on one BUCKETED pump. Feel free to discuss.

 

[dyezak]

What was the E%?

 

[V8bait]

What was the E%?

I think it was E79 going into the tank? They added 10 gallons to a pretty empty tank. I honestly treat all ethanol content over 70% the same. Saves me trouble and gains are similar lol.

I'll post the flex fuel log showing e content as soon as Robert replaces the micro usb OTG adapter somebody killed in their sleep deprived state....

*may have been me*

 

[Jeffman]

Update 2 March 5th – Flex Fuel

​

With an Ethanol sensor you can fill up with 93, e85, e100, whatever you please and instead of having to keep up with your exact blend and flash new maps so the car runs right. Or even more important so you don’t damage the motor because it thinks you are running a higher octane gas then you are. The Ethanol sensor tied into the DME allows the computer to constantly adjust your tune based on the ethanol content.

Careful here.
You don’t want to put 91 or worse gas in your tank, obviously, since only % ethanol is being calculated, not octane - especially for low-E mixtures, like less than E40.

 

[dyezak]

Careful here.
You don’t want to put 91 or worse gas in your tank, obviously, since only % ethanol is being calculated, not octane - especially for low-E mixtures, like less than E40.

Ummm dude...three words before your bolded highlighted portion of the quoted text you referenced they pointed this out themselves:

93o
e85
e100

Those are your options, and you can mix them at whatever ratio you please. Sometimes I wish all vendors were Tony because the response here would have certainly been epic and worthy of popping some popcorn.

 

[Jeffman]

I guess I should have quoted and bolded this part:

....This is great because on a daily driver you don’t know if you are always going to have access to E85. Or maybe the wife is going to drive the car for the day and you don’t want to have to change the flash in case she fills up with the wrong gas. ...

Just making sure some of our members caution their wives to always fill their FlexFuel N54s with 93

 

[langsbr]

LOL my wife has a tune on her Escalade for 93 only. She wouldn't know what to do with 87 or 89.