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10.69@134.7

Old Nov 21, 2015 | 09:46 AM
  #11  
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Originally Posted by 03sierraslt
Same boost as what you ran with the T4?
3-4 more psi with the 80mm

Stew, power level is good right now, injectors are maxed out. Need to work on traction and I want to get Bogarts up front instead of the factory 20s
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Old Nov 21, 2015 | 11:46 AM
  #12  
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Good job considering the track issues. So if i read correctly your maxed on the map sensor and OS? What are your plans to address that?
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Old Nov 21, 2015 | 12:19 PM
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2.5 MAP is near maxed (Gagetized is working on a stock style 3 bar MAP). For the time being I think I can just keep what I have as I may enough power to run 9s right now. The 134.7 trap isn't truly representative of the full power given the timing pull.

OS goes up to 285 kPa (26.6 psi) and above that I'm assuming it just references that last row of the fueling table. So OS shouldn't be an issue.

I also think I need the race cover, mainly for lower IATs and more power, but I'm sorry, not spending $500 on a compressor cover. Was watching a SEMA video on BW, and they've got a new 88mm compressor wheel for the S400 with 96 turbine. Comes with the V2 race cover and msrp was stated at $1400
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Old Nov 21, 2015 | 09:39 PM
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Is the 88mm wheel a cast wheel? You would more than likely be better off with a billet 84mm wheel from forced inductions. The thing that maxes out the S400 is the 96mm exhaust wheel.
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Old Nov 21, 2015 | 09:43 PM
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I seriously doubt BW would put a wheel the S400 that was of no use over a smaller wheel with the 96 turbine. From what I saw in the video, the wheel looked like the forged milled. Gagetized, I'm waiting for you to test the v2 race cover to see what the real gains are.

Also, just tested the new 6000 shift points, over 3 pulls from 60 I saw 2-3 upshift at 6088, 6273 and 6198. Whereas the old setup I had to put shift points at 4400 just to get shift at 6400. This definitely screwed me at the track. I'm still only seeing a 600-700 rpm shift drop however despite this being the tightest converter I think circleD can build in the 258. We were shooting for 800-1000

Last edited by GMCtrk; Nov 21, 2015 at 09:53 PM.
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Old Nov 21, 2015 | 09:51 PM
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It takes a lot of money to make a wheel casting. Forged/milled wheels of the same design arent any better, but are simply more economical from a limited number perspective.
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Old Nov 22, 2015 | 06:43 PM
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went to the 1/8th track (HMP) and only did 1 run....6.91@106.26

Again, trans wouldn't shift 1-2 with the corrected tuning. Checked my trans fluid level, and to my dismay, it was way low, as in well below the factory full mark. My "full" mark is 2" from the bottom of the dipstick which is well above the factory full mark by probably 1 cm. I'm really at a loss how this happened as I was sure I had the level correct when I re-installed the trans. So now there's a chance the trans, at least the 1-2, is shot. Regular driving is fine, but I'm sure now it was starving for fluid on the 1-2 wot.

In retrospect, I'm thinking I was tricked by a false dispstick reading due to filling the trans with fluid, and fluid being along the side of the fill tube. When the dipstick is removed it rubs against the tube picking up the fluid. This explains why 1 side of the dipstick has a much higher fluid level than the other. Solution: drive around and let the fluid drain out of the fill tube and then re-check. Complete f up on my part.
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Old Nov 22, 2015 | 07:34 PM
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Always check the trans fluid several times upon driving after a trans swap. Even filling the converter before install and running the trans thru the gears in the driveway, it always seems to suck a little more down after an actual drive. I wouldn't be so quick to assume the trans is hurt though. I have run mine a low enough to effect the 1-2 shift before and it is still running fine. Get fluid level up and try it again. It may be fine.

btw.. congrats on the new times. The new turbo seems to be working well.
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Old Nov 22, 2015 | 07:43 PM
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It will be awesome when it plants the tires. You need to figure it out. For example, the s10 went 6.80 at only 101 mph. Youre flying out the back when the first 60' are the most important. I could never get past a 1.68 60' in the old ecsb but i wish i could go back and try again with the learnin ive done since then.

Dont freak out on the trans yet. Top it off and see what happens. I had one low to where the converter was flaring. Topped it off and it cured it.
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Old Nov 22, 2015 | 07:51 PM
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I'm not freaking out by any means about it, just more pissed at myself than anything as we all know here how critical trans fluid level is and how much we harp on it. It was a total of 3 1-2 shifts at WOT so I'm thinking it will be fine.

As far as the 60' goes, I could tell on my 1 pass that track prep was great. Still only went out of the hole at 50% TPS and 5 psi and did a 1.71 60' (no spin). If I wasn't having any issues I would have hammered it on the next pass. When I got home there was still VHT on the tires. I think a lot of the issues I've been having with the 60' was due to poor or non-existent track prep at RPR street night. For here on out for a while I'm going to go to HMP solely and work on the 60', try and tune the caltracs. I need to be in the 1.5 range.
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