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09-01-2005, 10:34 PM
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#51
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Join Date: Jun 2003
Location: Castro Valley, CA
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Originally Posted by DYI01
What wideband do you have? Depending on what unit you have datalogging will make tuning that much easier.
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well i dont have the wideband yet either, i was thinking the AEM UEGO, is there any other ones that you would recomend and that can datalog?
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09-02-2005, 05:26 AM
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#52
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Join Date: Jul 2003
Location: Lowell, Mass
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DYI01-
I'd be interested to compare VVT numbers, as I have recently (before I read this thread) played with 5500 lift engagement.
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09-02-2005, 12:18 PM
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#53
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Join Date: May 2002
Location: Baltimore, MD, and Philadelphia , PA
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Quote:
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Originally Posted by EasyC
DYI01-
I'd be interested to compare VVT numbers, as I have recently (before I read this thread) played with 5500 lift engagement.
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clear out you pm box man
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09-02-2005, 12:22 PM
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#54
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Join Date: Apr 2003
Location: FORT WORTH, TX
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DYI01,
I try riching the high cam and it seems to affect the switch-over from low to high from 5500 to 6000 K...
I think I'm fine running 13.5 - 13.7 :1 in the high cams cuz my knocks are below 35...
and the AF when switching over at 5500 to 6000 is 13:1...
once again... excellent job tuning and finding out the little nitch of extra power and joy of a natural aspirated motor =0)...
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Life is short, live it fast...
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09-02-2005, 09:14 PM
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#55
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I have nothing.
Join Date: Mar 2003
Location: Montreal/Quebec/CANADA
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I cant read the second page ...it will not load???
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09-02-2005, 09:22 PM
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#56
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Join Date: May 2002
Location: Baltimore, MD, and Philadelphia , PA
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I cant read the second page as well. I had to load it through the reply page.
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09-03-2005, 02:56 AM
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#57
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Join Date: Jan 2004
Location: Simi Valley, California
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I'd try tuning your PFC fully then play with the VVT - looking at the dyno it seems like it's not fully tuned (power seems low and flat for a PFC). What you may find after fully tuning the PFC is that the cam switch over still has a slight power suckout. It goes away if you raise the switchover to 5600 rpm or 5700 rpm.
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2002 Celica GTS, Borla Exhaust, K&N Typhoon CAI, Apexi PFC, TRD Short Shifter, TRD Suspension, Enkei OR-52 wheels wrapped in Michelin Pilot Sport 225/45-16 tires, S2000 Antenna
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09-03-2005, 03:14 AM
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#58
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Join Date: Jan 2004
Location: Simi Valley, California
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Quote:
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Originally Posted by DYI01
What wideband do you have? Depending on what unit you have datalogging will make tuning that much easier.
IMO that is too lean for a daily driven map. I would richen it up some, but it is still your call.
Yes the lower tuned lift engagement will bring out a VERY smooth power band. There is no drama like with the 6000 rpm engagement. You can hear lift but its just a smooth pull, all the way to 8600 rpm. The PFC is one of the best mods I have done. I have learned so much from learning about tuning and tuning my car to make good power. There is a lot of hidden potential in the 2zz, you just need to know how to coax it out. My friend Prinya (Kaioshin) tested out my map and he loves the lower lift engagement and the smoothed out powerband. He has the trial header and stock midpipe/cat.
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DI101 - the dyno is looking sort of flat for power, I may have missed something in the thread but is the PFC fully tuned? Reason I asked is when the PFC is fully tuned, lift engagement usually has a small suckout in power. For example on my car I've pretty much have things dialed in and I'm doing over 120-129 ft/lbs from 2500-5500 RPMs, dropping to about 117 ft/lbs at lift engagement. If I engaged lift at 5500 RPMs, my torque drops to about 114 ft lbs. I've found that to remove the suckout, lift will need to be raised to 5600 to 5700 RPM, and as you stated, it's more than just lowering the lift point.
One thing I found was that the VVT actually reacts pretty fast - faster than I originally thought in my tuning process. Good to see others taking advantage of the 300-400 RPMs.
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2002 Celica GTS, Borla Exhaust, K&N Typhoon CAI, Apexi PFC, TRD Short Shifter, TRD Suspension, Enkei OR-52 wheels wrapped in Michelin Pilot Sport 225/45-16 tires, S2000 Antenna
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09-03-2005, 09:09 AM
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#59
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Join Date: Sep 2005
Location: Texas
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Could you post the corresponding torque curves for the horsepower graphs that you've already posted? I'm interested to see what is going on with your torque as you tune the VVT.
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09-03-2005, 11:19 AM
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#60
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Join Date: May 2002
Location: Baltimore, MD, and Philadelphia , PA
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Torqued: I think the reason the power looks low is from the actual dyno. I previously posted that the same MWR basemap put ~170 whp on the dyno that I usually go to. This dyno with the same map put ~157 whp. Ive dynoed on 4 different DynoJet dynos, and the two AWD dynos I have run on read lower and about the same #'s. The the two 2WD dynos I have run on have read about the same #'s as well. I put mid~high 150's on a 4WD DynoJet and low 170's on the 2WD DynoJet. It sounds weird but thats the case. I am going to go back on my usual dyno in a week to do a few pulls and get 'better' numbers, I am hoping for low~mid 180's. My a/f is tuned pretty flat IMO and not done so for power but but mostly safe. My IGN is tuned for the max advace that brings out knock index numbers that I feel are acceptable, then pulled back 2 degrees for saftey. VVT is also tuned for max power, as I ran from 10 to 50 degrees advance in steps of 10 on both the low and high cam, to find what cam angles make the best power. Past 50 I saw no change in power up or down over what 50 made. I am positive 50 is the max advance of the VVT system.
lost27: I have the dyno Files, but I am at my rents place for ~3weeks. I dont have access to any type of picture editing software. If anyone wants to host the files for me I would gladly email them to someone, so everyone can look at the files. You will need the DynoJet RunViewer software to look at the files. I have a total of 40 files.
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09-03-2005, 04:00 PM
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#61
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Join Date: Jul 2000
Location: Washington, DC
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Page 2 of this thread seems to be screwed. Testing something....
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09-04-2005, 12:48 PM
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#62
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Join Date: Feb 2000
Location: Lake Tahoe, NV/CA
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how about you post the map up here so i can work off it when i go to the dyno in couple weeks
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09-04-2005, 11:09 PM
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#63
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Join Date: May 2005
Location: Elsinore Area
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one of the Matrix boys just picked up some nice power after spending some time with Camcon (2004 Matrix)
Quote:
188.2whp, 133.9tq to be exact!
The math works out to +15.3whp and +7.8tq. The printer wasn't working so I had to take a picture of the screen instead.
Here's a dyno from another shop showing what I was pulling before I got the Camcon just for reference:
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Sig edited. Max size is 500 x 250. Please resize
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09-06-2005, 05:22 AM
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#64
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Join Date: Jul 2003
Location: Lowell, Mass
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Quote:
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Originally Posted by DYI01
Quote:
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Originally Posted by EasyC
DYI01-
I'd be interested to compare VVT numbers, as I have recently (before I read this thread) played with 5500 lift engagement.
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clear out you pm box man
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email me foo!, the pm box here at the site is aggravating.
chris@tuningprecisionracing.com
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09-19-2005, 06:45 PM
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#65
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Join Date: Nov 2004
Location: Seattle,WA
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I wish they made Apexi PFC for matirx 2zz it would be sweet.
But camcon doesn't control lift.
But that s an impresive matrix.
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05 Matrix XRS Indigo Ink Pearl
Progress RSB, TRD STB, Custom Borla 3", Tein SS, TWM SS, GT2860RS -700cc TK.com kit, JDM helical LSD from spyder, RPS Max/Street, C-One Type R Flywheel, Urethane Filled Motor Mounts, 18" Volks GT-S, HYDRA EMS
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09-19-2005, 07:12 PM
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#66
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Join Date: May 2002
Location: Baltimore, MD, and Philadelphia , PA
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holy crap the second page is viewable again!!
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09-19-2005, 08:49 PM
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#67
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Join Date: Jul 2000
Location: Washington, DC
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Quote:
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Originally Posted by DYI01
holy crap the second page is viewable again!!
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The thread is fixed. It was caused by a member N/A2ZZ that for some reason every thread he posted in was going to hell. Larry deleted his account and all his posts and all the threads got fixed.
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10-23-2006, 02:29 AM
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#68
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Join Date: Apr 2006
Location: San Antonio, Tx
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What about VVT adjustment and Lift adjustment on like turbo, supercharger, or stroker engines. I'm N/A but im interested to see if anybody has worked on that.
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10-23-2006, 11:02 AM
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#69
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Join Date: Jul 2000
Location: Washington, DC
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Quote:
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Originally Posted by Gt to GtS Swap
What about VVT adjustment and Lift adjustment on like turbo, supercharger, or stroker engines. I'm N/A but im interested to see if anybody has worked on that.
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Its exactly the same concept. You would go about tuning it exactly the same way.
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11-17-2011, 08:26 AM
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#70
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Hardcore N/A
Join Date: May 2008
Location: Greece
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VVT tune lurker,lol!!!
This thread has excellent info and should be stickied!!!
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