2011 wrx build :) - Page 15 - Subaru WRX Forum
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post #211 of 315 Old 12-13-2011, 08:57 AM
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What do you think of the sound of the ELs. I just ordered them. All that only got 323? (I believe it said that, dont feel like going back to look). Surprised, I thought it would be more. Looks good. I will be following you as inspiration for my 2011.
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post #212 of 315 Old 12-13-2011, 09:51 AM
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They take your car from Subaru to plain ol' tuner sound. But they spool a bit quicker and breathe a bit better. If he is in fact getting 323 on regular gasoline, it is definitely not "only", he still has some headroom as far as timing goes etc. You would be hard pressed to find many cars pushing 323 on Airboy, (if done correctly) running on gasoline with stock motor and turbo. But therein lies the problem, it is tough to get a perfect run.
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post #213 of 315 Old 12-13-2011, 12:37 PM Thread Starter
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Quote:
Originally Posted by rjklement15 View Post
What do you think of the sound of the ELs. I just ordered them. All that only got 323? (I believe it said that, dont feel like going back to look). Surprised, I thought it would be more. Looks good. I will be following you as inspiration for my 2011.
I love it. It's so smooth and fluid sounding that everything runs better, less vibrations and more power to boot. OEM headers are very very poor at efficiency and there pulse width and flow characteristics just hold stuff back. Aftermarket UEL headers are even better since the runners are separated till the UP or turbo and flow is improved.

I think I said in here the air boy reads low like a mustang. My tuner has a brand new mustang and a dyno jet and there's a 15.2% difference. All my old tunes were on the dynojet. Since air boy is close but not exact to a mustang, I'd say it's 10% off from the dynojet. Plus like Carl said there's some more timing and stuff that needs done. And with the smoothing factor on the air boy I was able to get up to 340+HP depending where I put it.

Scott-2011 WRX 335HP 394TQ 93 VF52!
http://www.wrxtuners.com/forums/f121/2011-wrx-build-31226/
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post #214 of 315 Old 12-14-2011, 09:12 AM
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Airboy is a good tool because if you use the same stretch of road every time, you get apples to apple numbers for your car.

Syno, if you want to be 100% sure the logs you have are clean, do two pulls and I'll have the program average them for you. Do them on the same road but in opposite directions, that will take away any affects of slight grade changes have on the log. Slightly downhill will give you a bit mroe power, uphill the opposite, but once they're averaged in the program you have a pretty dead nuts number to use.

Who cares how it compares to other dyno's, it's a tuning tool to see how you're improving your car without having to pay $90 for three pulls on the local dyno.

I also haven't been on in a few days, I'm getting to those logs you sent me now.

-Chris
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post #215 of 315 Old 12-14-2011, 09:34 PM
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All I'm saying chris is that all it takes is one person to do a craptastic job at doing a datalog and claim I have 7357842403246536483258409 hp and its got to be true because airboy told me so. I like your idea though of taking a few pulls to avg out the road error. That makes more sense to me.

Kirt
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"When in doubt...flat out" - Colin McRae
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post #216 of 315 Old 12-15-2011, 12:31 AM Thread Starter
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i really dont think you can mess up a datalog. log what you want, push log button, push WOT at like 2k to redline, done. you really cant mess that up. and to average a road like chris said it should be pretty close. only thing i can see affecting an air boy is outside temp, humidity, wind etc from one day/week/month to another. might want to have a tune for winter and one for summer for sure.

Scott-2011 WRX 335HP 394TQ 93 VF52!
http://www.wrxtuners.com/forums/f121/2011-wrx-build-31226/
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post #217 of 315 Old 12-15-2011, 09:49 AM
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The only thing I've noticed lately is the fastpoll option in Romraider is throwing the data points off.... By off I mean, if you go down the rpm column you can see sometimes it backs up, but hte time is in the right order .....
Time RPMS
1250 4812
1260 4950
1270 4875

Like that, so what I do is just go in and delete the one that would make the rpm's jump out of order. It doesn't mess up the numbers, just makes the graph look jumpy. Maybe next time I'll try and just sort the table by rpm's in ascending order at the WOT point and see if it changes much.

-Chris
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post #218 of 315 Old 12-15-2011, 10:32 AM
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^But RR is reading it from somewhere !

Paul
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2007 WRX Sold
2007 STi totaled
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post #219 of 315 Old 12-15-2011, 10:47 AM
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It's only started happening since they releast fastpolling though. The traditional logging speed doesn't give you nearly as many data points, but is always in order. Fastpolling gives you at least 10x the data points, but sometimes they get out of order.

I think it just gets lost somewhere between the obd2 port and the laptop.

-Chris
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post #220 of 315 Old 12-15-2011, 12:00 PM Thread Starter
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its gotta be just the rpm though because on a line where rpm drops back down, things like boost are still rising. same with IDC; it always rises so if rpm was truely dropping boost/IDC etc would drop also. the only thing that has huge drops is the MAF voltage and air flow and thats just a down side to blow through. still in the process of fine tuning.

Chris ive gotten 3 revisions since that log so maybe a few more ponies and smoother numbers.

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http://www.wrxtuners.com/forums/f121/2011-wrx-build-31226/
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post #221 of 315 Old 12-15-2011, 08:43 PM
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Want to know how to screw a datalog up? Let off the throttle half way threw and then get back on it. The AP has some weak sauce dyno thing on it to calculate crank hp. I played with it and noticed how easy it was severely skew the results. If you do a straight WOT pull and don't lift then yeah...its idiot proof. But, idiots can even mess that up.

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post #222 of 315 Old 12-15-2011, 11:14 PM Thread Starter
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lol well i guess your right. i dont have to worry though, data logs are always 100% WOT and there getting so close, i love it!! hats off to the boss helping me out!

air boys up to 375tq at 4k! full boost, 21psi at 3k (not in this log because i started at 2500rpm)!!! on my old dyno jet i know this would put down 400awtq. still hopeing for a little more HP but the vf52 is dying at 6k.

https://docs.google.com/spreadsheet/...HbXFVdVE#gid=0

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http://www.wrxtuners.com/forums/f121/2011-wrx-build-31226/
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post #223 of 315 Old 12-16-2011, 10:30 AM
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Quote:
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Want to know how to screw a datalog up? Let off the throttle half way threw and then get back on it....... If you do a straight WOT pull and don't lift then yeah...its idiot proof. But, idiots can even mess that up.
You're supposed to do WOT pulls... That's why the log has throttle position on it, you have to filter out the WOT data points and it only uses that info. I don't even know what letting off the throttle would do besides give you no useable info for airboy.

-Chris
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post #224 of 315 Old 12-16-2011, 01:53 PM Thread Starter
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yuuuuuuuuuuppppppppppp

Scott-2011 WRX 335HP 394TQ 93 VF52!
http://www.wrxtuners.com/forums/f121/2011-wrx-build-31226/
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post #225 of 315 Old 12-16-2011, 06:19 PM Thread Starter
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ALL DONE!! im happy! was able to get the timing i want up top and boost and everything looks pretty damn good.

23* up top, 20psi by 3200 rpm (could be sooner but was getting spiking of almost 23psi so he to back out all the WGDC which i believe whats caused the 200 rpm later spool) and tapering to 16psi. the 750cc injectors are only at 81% and the down low TQ is awesome. i love the EL header!!!!!!!!!!!!!!! here's 2 dynos, ones on a smoothing of 6 and the other is an 8. not sure why the dip is there in the smoothing of 6. there was no knock or anything so the motors happy. my guess is the wind or something but good thing smoothing factor is in there.

PS this is with the exhaust cutout closed, i forgot to do one open.




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http://www.wrxtuners.com/forums/f121/2011-wrx-build-31226/
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