G-Tech and Z32MAF...
02-24-2005, 07:09 PM
#1
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Join Date: Sep 2004
Posts: 296
G-Tech and Z32MAF...
Well I decided to get out the G-Tech and make a pass. Roads were dry but sandy and I left 1'st way easy.. 2nd still spun.. then lift.. spin.. lift then just decided to get 3d underway.. It held and made the rest of the pass.
My previous best was 14.7@102.5mph with 12psi at 10.4-10.6 on the wideband.
This pass was 14.07@109.7mph with 9psi and 10.2-10.4 on the wide band. Still pig rich and low on timing and boost... Somthing's working better. With 109.5mph and traction it should see low 13's.
So.. I decided to go back and install the Z32 MAF... All I did was unplug the stock and install the Z32. Fired right up... Idled ok. Went out and drove and it was WAY LEAN. So I ended up almost doubling the Fuel pressure and it's STILL lean!!! Wow... Part throttle and normal driving is great but WOT is at 13.5AFR. so I'm not going to make much progress till Bernard Bails me out of another kettle of fish I've seem to have stuck myself in.
~Scott
My previous best was 14.7@102.5mph with 12psi at 10.4-10.6 on the wideband.
This pass was 14.07@109.7mph with 9psi and 10.2-10.4 on the wide band. Still pig rich and low on timing and boost... Somthing's working better. With 109.5mph and traction it should see low 13's.
So.. I decided to go back and install the Z32 MAF... All I did was unplug the stock and install the Z32. Fired right up... Idled ok. Went out and drove and it was WAY LEAN. So I ended up almost doubling the Fuel pressure and it's STILL lean!!! Wow... Part throttle and normal driving is great but WOT is at 13.5AFR. so I'm not going to make much progress till Bernard Bails me out of another kettle of fish I've seem to have stuck myself in.
~Scott
02-24-2005, 07:46 PM
#2
sounds great that you have it working better.
the 14.07 seems a little slow for that amount of speed. Was it just because of the sand?
did you install the wb yourself? i may just wait to drive down to install the o2 sensor.
the 14.07 seems a little slow for that amount of speed. Was it just because of the sand?
did you install the wb yourself? i may just wait to drive down to install the o2 sensor.
02-24-2005, 09:36 PM
#4
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Join Date: Jan 2002
Posts: 3,371
[B]according to the gtech i trap at 100-101 NA which is way to high so 5mph would make it about 95-96 which is more realistic although i can only pull 14.80's with sh*t tires
not bad get the A/F in the 11s or low 12s and you should get 13's no problem with traction 12's are within reason you should really dyno your car i bet its making over 300whp which would be quite a feat for the VG
not bad get the A/F in the 11s or low 12s and you should get 13's no problem with traction 12's are within reason you should really dyno your car i bet its making over 300whp which would be quite a feat for the VG
02-24-2005, 10:36 PM
#6
ok tryed three runs. The best was like 14.10 and a trap of 103.7. Now my g tek at the track is normaly like.1 to .2 off and the speed is normaly like 2 mph off to slow. what do you think had some wheel spin in 2nd.
02-24-2005, 11:37 PM
#8
um not sure. Oh yeah I wanted to add my run was at about 8 to 9 psi as it is cold tonight and the waste gate is spiking. My nock readings was like 238. WOw yes I know that realy high. Still have not got my last 370cc in yet. Stock fuel system
02-25-2005, 12:04 AM
#9
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Originally Posted by mtcookson
so uh.... is this just not true then or what?
02-25-2005, 02:52 AM
#10
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Join Date: Sep 2004
Posts: 296
I realy can't launch in 1st gear... It's just impossible. Violent tire shake is manditory with that kind of launch. 2nd gear isn't much better.... spinning and hitting the rev-limit at 5800 is comon. (although not intentional) I'm not happy with the ET at 14.01 but that's not realy what I look at. I consentrate on MPH. If I pick up MPH Somthings right and there's more power.
I've ran this G-tech at the track in my Camaro and the ticket and readout were within a tenth MPH was .3 off if I rembmer right.
If I can get my O2's in the 11.5 range at WOT I'd be happy.
Wide band's a snap to hook up... should be able to do it that day.
Going to hit Bernard up for more advice on Live Edit for the Z32 MAF. Once that is worked out I think I'll have a damn good chance on having it very close to a good tune (Finaly!) This would have taken 3 passes with the FAST system.. not 3 months.
~Scott
I've ran this G-tech at the track in my Camaro and the ticket and readout were within a tenth MPH was .3 off if I rembmer right.
If I can get my O2's in the 11.5 range at WOT I'd be happy.
Wide band's a snap to hook up... should be able to do it that day.
Going to hit Bernard up for more advice on Live Edit for the Z32 MAF. Once that is worked out I think I'll have a damn good chance on having it very close to a good tune (Finaly!) This would have taken 3 passes with the FAST system.. not 3 months.
~Scott
02-25-2005, 07:55 AM
#11
Yes, it is true. The ~5mph additional comes from the "Additionally, most race tracks average your speed at the last 60 feet of the 1/4 mile run while your G-TECH/Pro measures your speed at the exact 1/4 mile point. So, some discrepancy is to be expected...."
My track time was 15.5@90ish(1st time, actual should be around 15.2-15.3@93-94mph), however after repeated Gtech runs with better grip on the streets, I got a 15.3@99mph. So, the time is pretty damn close to expected/average time for stock, but no way a stock 5.0 Max would pull 98-99mph.
My track time was 15.5@90ish(1st time, actual should be around 15.2-15.3@93-94mph), however after repeated Gtech runs with better grip on the streets, I got a 15.3@99mph. So, the time is pretty damn close to expected/average time for stock, but no way a stock 5.0 Max would pull 98-99mph.
Originally Posted by mtcookson
so uh.... is this just not true then or what?
02-25-2005, 08:05 AM
#12
Originally Posted by IceY2K1
Yes, it is true. The ~5mph additional comes from the "Additionally, most race tracks average your speed at the last 60 feet of the 1/4 mile run while your G-TECH/Pro measures your speed at the exact 1/4 mile point. So, some discrepancy is to be expected...."
My track time was 15.5@90ish(1st time, actual should be around 15.2-15.3@93-94mph), however after repeated Gtech runs with better grip on the streets, I got a 15.3@99mph. So, the time is pretty damn close to expected/average time for stock, but no way a stock 5.0 Max would pull 98-99mph.
My track time was 15.5@90ish(1st time, actual should be around 15.2-15.3@93-94mph), however after repeated Gtech runs with better grip on the streets, I got a 15.3@99mph. So, the time is pretty damn close to expected/average time for stock, but no way a stock 5.0 Max would pull 98-99mph.
02-25-2005, 08:12 AM
#13
Tracks vary...Gtech test roads vary, so that could very well happen. I'm just saying what *I think* the consensus of users have noticed. Could be wrong and honestly, it doesn't matter for tuning/practical purposes. I'd use the track to compare other track times and use the Gtech to compare other Gtech runs, hopefully with similar conditions.
Anyways, factory speedometers read slow. It's a fudge factor OEMs put in to prevent speeding ticket lawsuits. My OBD scanner says the ECU is actually seeing 57mph from the speed sensor, yet it's reporting to the speedometer 60mph.
Anyways, factory speedometers read slow. It's a fudge factor OEMs put in to prevent speeding ticket lawsuits. My OBD scanner says the ECU is actually seeing 57mph from the speed sensor, yet it's reporting to the speedometer 60mph.
Originally Posted by 93turbo gxe
Yeah you are right but my g teck is slow than the track speeds I get. I ran a 15.1 a while back and it was with a trap of 97mph. that seems low to having a 60ft of 2.5. LAst night the second it went off I looked at my odomotor it said like 106mph it recored 103. Hell who knows!
02-26-2005, 08:54 PM
#15
Hey thats great scott. Sounds like a beast you got on your hands there. Dam I wish we were live closer than we do. I bet you could show me a lot of small thing to get the max on into the 13,s. Well I still need a clutch and a little more tunning after I installed the ijectors. THen I should hopefuly turn this turbo up to about 13 14 psi and see what happens. that should get me in the 13's. But i want to get to the low 13's or maybe high 12's before its over.
02-27-2005, 08:55 AM
#16
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Join Date: Sep 2004
Posts: 296
As I've been discoving front wheel drive is no fun to get traction or good launches with. I'm so usto my rwd cars that now that I'm making the power I can't put it to the ground! And if I can stick it what will break? I've read the threads on axel shafts and 3d gear on the trannys what fun... 
I should take that old parts car Maxima of mine and make it Rear Wheel Drive and do the same build as what I've got on the engine. Take the F.A.S.T. system I have for my GN and stick it on there and realy see what these engines are capible of!!!!!
I've thought of that several times. It'd be fun.
I've almost given the thought of building the parts car engine up and saying screw the GN engine i've got built in the garage. With good rods and crank in this VG engine and the little things I did with the heads and intake I'm guessing it'd take just as much power or more than the GN engine. Stick it in the Camaro Chassis that I had the GN engine in before and go Nuts. Ok.. maby I'm just nuts...
Got the Z32 MAF working good now with help from Bernard and tuning with Live Edit. Cruzing and part throttle is 14.7-13.5 WOT is 11.4-11.7 which is where I set the GN engines up at. So.. now I need to have this program burnt onto a chip. It's prity much programed and done. Happy with the way it drives and pulls with 10lbs of boost.
Traction and finishing the front bumper is my next battle.
~Scott
I should take that old parts car Maxima of mine and make it Rear Wheel Drive and do the same build as what I've got on the engine. Take the F.A.S.T. system I have for my GN and stick it on there and realy see what these engines are capible of!!!!!
I've thought of that several times. It'd be fun.
I've almost given the thought of building the parts car engine up and saying screw the GN engine i've got built in the garage. With good rods and crank in this VG engine and the little things I did with the heads and intake I'm guessing it'd take just as much power or more than the GN engine. Stick it in the Camaro Chassis that I had the GN engine in before and go Nuts. Ok.. maby I'm just nuts...
Got the Z32 MAF working good now with help from Bernard and tuning with Live Edit. Cruzing and part throttle is 14.7-13.5 WOT is 11.4-11.7 which is where I set the GN engines up at. So.. now I need to have this program burnt onto a chip. It's prity much programed and done. Happy with the way it drives and pulls with 10lbs of boost.
Traction and finishing the front bumper is my next battle.
~Scott
02-28-2005, 09:44 AM
#18
Quick question for varification. I was under the impression that to swap out the stock MAF to the ZX one, the ecu had to be modified by JWT? Both times I've sent my ecu to them, they ask me this question and incenuated that they would take that into consideration when programming. Clarify please.
02-28-2005, 03:07 PM
#20
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Join Date: Sep 2004
Posts: 296
Live Edit is alot more difficult to work with than the Zem. Of course Live Edit is FREE so ya get what ya pay for
If I didn't have Live Edit and Bernard's help I'd be totaly Screwed. I'd be at the mercy of fuel pressure regulators and alot of luck.
Slimer... it's looking like we'll be sleding when your here it's snowing like hell! DAMN!
~Scott
If I didn't have Live Edit and Bernard's help I'd be totaly Screwed. I'd be at the mercy of fuel pressure regulators and alot of luck.
Slimer... it's looking like we'll be sleding when your here it's snowing like hell! DAMN!
~Scott
02-28-2005, 05:18 PM
#22
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Join Date: Nov 2003
Posts: 114
Originally Posted by Boosted Maxima
Live Edit is alot more difficult to work with than the Zem. Of course Live Edit is FREE so ya get what ya pay for
If I didn't have Live Edit and Bernard's help I'd be totaly Screwed. I'd be at the mercy of fuel pressure regulators and alot of luck.
Slimer... it's looking like we'll be sleding when your here it's snowing like hell! DAMN!
~Scott
If I didn't have Live Edit and Bernard's help I'd be totaly Screwed. I'd be at the mercy of fuel pressure regulators and alot of luck.
Slimer... it's looking like we'll be sleding when your here it's snowing like hell! DAMN!
~Scott
03-01-2005, 12:24 PM
#23
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Join Date: Sep 2004
Posts: 296
Yea.. I need to invest in a newer laptop that can do more than add 2+2
Thanks again for all the time you've spent helping me with my little science project!!!
You have alot of experience with Nissan ECU programming.. Just wish you were closer!
~Scott
Thanks again for all the time you've spent helping me with my little science project!!!
You have alot of experience with Nissan ECU programming.. Just wish you were closer!
~Scott
03-01-2005, 05:55 PM
#25
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Join Date: Nov 2003
Posts: 114
Originally Posted by slimer
im bringing my new laptop on friday if you want to use it.
http://forums.nicoclub.com/zerothread?id=95837&page=2
see if it works on your machine.
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