Nice Jared! there GT3 in red porsches.. i work on their cars.. they come from britsow racing.., and i drove it.. and love it!

 

Got an APS BOV yesterday. I noticed that the piston was a little sticky and dirty. So I took it apart and cleaned it, and used some fancy Dow Corning low viscosity grease to put it back together. After the rebuild the piston moved nice and smooth. The APS is pretty simple and easy to take apart and service, that's nice. On the drive to work I tried to test it a little with part throttle and lifts going up hill. Seems to be doing alright, but I won't really know until I get back to the track. The biggest problems are found at part throttle in the high REV's of 4th and 5th gear.

I also grabbed a IX BOV as a backup.

 

I hear some people like to put teflon tape on the upper adjustable thread bolt as they can sometimes leak. Might want to look into that too.

 

^^^ Already got it young jedi.

 

You are quick one Obi-Wan...I sense the force is strong within your car

 

Since my car is running and I made my planned brake upgrades the rear wing project is now in my cross-hairs. Game on.

Using the data I got from the CFD work aeroweenie helped with I can get a CL between 1.3 and 2.2. That should create between 100lbs - 200 lbs downforce at 80 mph. The APR and Voltex wings create 150 lbs at 80mph for reference. At 150 mph it could be between 350-700 lbs. Note that this is the force the wing creates, which will be fighting the lift the car naturally creates.

Width 64 inches. This makes it a little narrower than the GT500 wing from APR. This will fit in my garage nicely and is roughly the width formed by the edges of the taillights. It's still damn wide.

Cord is going to be 12 inches.

Height is 16 inches off the deck, which is roof level.

Uprights will be .20" thick 7075 aluminum, because I have two full sheets of the stuff. Got those for free, retail value is around $1000 per sheet. They have a factor of safety of like 15 in the normal "downforce" loading. The hard part is side loading, either someone leaning on the wing or the aero loads from cornering. The weakest area is actually the tab which protrudes from the airfoil for mounting.

 

120ish around the straights?

 

120 ish the way I went through. Should be over 135+ mph now that my twitchy alignment is fixed. I'll have datalogger graphs from next weeks outing.

Back on E85. Gonna give the APS valve a proper workout now at 28 psi.

 

Made a couple data logging pulls to see how the APS valve was doing. Boost was about .5 psi different (APS 27.5psi, Forge 28.1 psi) from the Forge. Given variation, it seems like it's doing a good job. Surging and bucking are much better.

I noticed that the car felt a little slower during the pulls. My butt dyno it getting pretty well calibrated. So i ran the pulls through DLL and came up with 440 whp, which is down 20-25 whp from before. Boost was within .5 psi and timing was unchanged. BUT, this is the first tank of E85 after a pump gas tank. Bryan at GST had told me that he typically sees AFR variation for the first two tanks after switching; even on a tank drain. I only went onto the gas light, and not that far for my standards. Reviewing the AFR logs sure enough the AFR's are low by .5 points. So the car is running rich right now.

So for those using E85 be aware that the first tank is always a little richer. If you tune on the first tank, you'll be lean on the following tanks. I'll recheck the AFR's to see if they are back to their tuned level on the 2nd tank.

I also bought all the Aluminum for the wing project this weekend, it was $100. Now I just need to order the carbon fabric and resin. Looks like material cost will be about $400.

 

I was looking forward to reading this thread and getting away from COSMOS but then you posted pics, damn you! Interested to see how the wing turns out.

 

Went and bought a new computer for data logging and tuning today. I've been looking at little netbooks for about 6 months now and I'm glad I waited until now to pull the trigger. First gen netbooks had 9" screens, then they moved up to 10". Acer now makes an 11.6" with a full size keyboard - and it's $349.

This is the coolest friggin thing. It's big enough to feel like a real laptop, but it's micro sized, uber thin, and weights nothing. Not to mention it was $349. I've got all my tuning and datalogging software loaded and running perfect. That's nice because my high-power 64 bit windows xp laptop that I use to run Solidworks had issues with some programs.

Anyone looking for a new tuning computer look no further - this thing dominates.

 

nice.

Yea if it fits in the glove box it's a god send. Datalogging at the track ftw!

 

I just picked up a 10" hp about 2 months back. Sooo much easier trying to do things in the car than it is with my 17" one. And it fits in the glove with room to spare. Only thing I've yet to figure out is how to keep it datalogging when I close the screen.

Curious to see what your duty cycles have settled in at with the leaky BOV issue solved.

Dave

 

Sick I can't wait to see how your wing turns out and How well it performs

 

I just did the glovebox test fit, and well......... it fits like a... glove? It barely fits, but it does slide right into place, with the battery up. It rubs (I made a small scratch in the glossy finish) trying it with the battery down. Problem is that it leaves NO space for the cables to exit the side of the computer. So I'll need to cut an access slot in the side of the glove box - which in no big deal to me. Bryans original review of the Asus Eeee PC planted the seed for this a while back.

Dave,

I use a manual boost controller so there's no duty cycle for boost, and the BOV didn't mess with injector duty cycle. The Forge BOV can hold boost like crazy, it didn't leak. The stock valve dropped about 5 psi at around 28.5psi (based on what the Forge was holding). The APS valve is holding boost very nicely and not creating bucking at part throttle - it is nice.

I'm on my 2nd tank of E85 after the switch back from pump gas and the AFR's have indeed settled back into their previously tuned values.

Tonight is the standard issue transformer routine where the cars gets all of it's track parts swapped in. Rotors, pads, spacers, wheels and tires, and splitter. If my daily driver wasn't lame the car would just sit in the garage ready to go, but I've been commuting to work in the EVO for the past couple weeks. 3 cyclinder CRX FTL.