Technosquare ECU upgrade
05-30-2006, 06:53 PM
#1
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Technosquare ECU upgrade
I have a couple of questions abotu the ecu upgrade that technosquare offers for the 5.5 gen max. I know sr20 has a upgraded ecu so maybe he can chime in as well. I just got a spare ecu that i want to send out and have it reflashed. Now should we use some info from the 350z and have it put into the maxima ecu? also can the yget rid of the immobilizer? thanks for the help.
05-30-2006, 08:36 PM
#3
Seems as if the A34 ECU is easier upgraded using Z33 maps. It takes quite a bit of explaining to TS that you want the Z33 maps on the A33B ECU.
They try and feed you quite a bit of crap, but with enough nagging they should be able to use the Z33 VTC etc.
They try and feed you quite a bit of crap, but with enough nagging they should be able to use the Z33 VTC etc.
Originally Posted by Sales Dep. Technosquare, Inc.
We use same VTC map for stock camshaft application for all VQ35 application, so you have same upgraded map as what we send out for 350Z. For some reason, you are thinking Maxima ECU and 350Z ECU works same way, but it is not. Especially you got 2003 ECU which even hardware configuration is different. Thus, mapping is very different because of sensor difference (ex. MAF). So, we can't simply copy 350Z map into Maxima ECU, because coefficient
is different. We maximize the Ignition timing based on the Maxima map, but end result is very similar to 350Z's timing in degree, but the number on the map is very different. We can't make the ignition timing identical to 350Z, because your VQ is side mounted, so the cylinder bank in rear gets detonation due to the cooling efficiency.
Cam timing map is based on the Z and actually improved even more for higher rpm part. Unless you are using different cam shafts, that map is as good as youo can get for stock cams.
Since the Maxima has side mount VQ with different configuration of intake, simply installing Z maps doesn't work. We optimized the Z map for side mount VQ and that is what you got in it. The program is based on the Maxiam, but maps are even more radical then Z33. By the way, why did you change intake plenum to 350Z one? Didn't you loose more bottom end torque than what you gained at higher rpm? 350Z intake plenum is designed under a lot of compromises.
is different. We maximize the Ignition timing based on the Maxima map, but end result is very similar to 350Z's timing in degree, but the number on the map is very different. We can't make the ignition timing identical to 350Z, because your VQ is side mounted, so the cylinder bank in rear gets detonation due to the cooling efficiency.
Cam timing map is based on the Z and actually improved even more for higher rpm part. Unless you are using different cam shafts, that map is as good as youo can get for stock cams.
Since the Maxima has side mount VQ with different configuration of intake, simply installing Z maps doesn't work. We optimized the Z map for side mount VQ and that is what you got in it. The program is based on the Maxiam, but maps are even more radical then Z33. By the way, why did you change intake plenum to 350Z one? Didn't you loose more bottom end torque than what you gained at higher rpm? 350Z intake plenum is designed under a lot of compromises.
05-31-2006, 11:35 AM
#4
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i also asked them about using the maps from the 350z and they gave me the exactly same answer. and i been looking at the fsm for both the 350z and the maxima because i wanted to use the 350z ecu but its alot easier for the 6th gen guys to use the early versions of the g35 ecu then for 5.5 gen maximas to use the 350z ecu.
any other inputs or advice?
any other inputs or advice?
05-31-2006, 12:58 PM
#7
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per the 03 G35 sedan FSM:
Early models with A/T were "TYPE 1" and use the A33B connector.
All M/T and later A/T models were "TYPE 2" and use the Z33 connector.
You would need to verify if it is the same for the coupe.
Early models with A/T were "TYPE 1" and use the A33B connector.
All M/T and later A/T models were "TYPE 2" and use the Z33 connector.
You would need to verify if it is the same for the coupe.
05-31-2006, 01:17 PM
#8
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Originally Posted by eng92
per the 03 G35 sedan FSM:
Early models with A/T were "TYPE 1" and use the A33B connector.
All M/T and later A/T models were "TYPE 2" and use the Z33 connector.
You would need to verify if it is the same for the coupe.
Early models with A/T were "TYPE 1" and use the A33B connector.
All M/T and later A/T models were "TYPE 2" and use the Z33 connector.
You would need to verify if it is the same for the coupe.
But i dont have an A/T so according to that info I cannot use the g35 ecu because the M/T models use the z33 connector. I havent looked into the coupe but most likely its the same.
05-31-2006, 01:31 PM
#9
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If you are feeling ambitious, just make yourself up a patch harness to go from an A33B male connector to a Z33 female connector.
If you are feeling ambitious and daring, pull all your ecm connector terminals out and plug them into a Z33 connector.
If I do not get anywhere with the EU controlling my VTCs without codes, I may consider the second option.
If you are feeling ambitious and daring, pull all your ecm connector terminals out and plug them into a Z33 connector.
If I do not get anywhere with the EU controlling my VTCs without codes, I may consider the second option.
06-03-2006, 10:02 AM
#14
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Join Date: May 2005
Posts: 279
Well I called and spoke to one of the techs at technosquare last week and they told me this following information which could be very useful to some. I asked them if they still tune the air/fuel ratio and they said no, I guess this is because various people have various parts, and they see it would be harder to program one specific tune, onto many peoples ecu. They told me what they wanted me to do is dyno my car, with the a/f readout, and they told me they will tune my ecu based on the dyno, which I figured is a great idea. So now, they can tune my car better with my a/f then just giving me one of their base setups. The only thing about that tho, is when I send the ecu I want a 7200rpm limiter, and my dyno will only read to 6600rpm. I guess the remaining rpms will just be untuned. But I just wanted to share some of this information for the people that didn't know about this. And I know it takes time, and I know they probably won't get the perfect a/f ratio for my all motor car, I can make a few adjustments on the dyno when I go after, and tune with a vafc-II.
06-03-2006, 08:27 PM
#16
Originally Posted by Starchild2K2SE
and my dyno will only read to 6600rpm
Originally Posted by Mass_Media
Im new to the whole tunning your engine thing. But from what i have read in the sc/tc forums wouldn't it be easier just using Greddy EU then sending in your ecu or trying to make it work with the z33.
... Do you mean tune A/F etc with the EU, and then sending the ECU to get Z33 VTC maps and ?
06-11-2006, 10:02 AM
#21
Ok, got some dumb questions here, partly because I am still learning some of this stuff. Here are copies of my dyno's that I did a week ago. All I have is a full Cattman cattback along with the FastCat and the Cattman Y-Pipe.
Some mentioned to me that my AFR is all over the place, still learning what that might mean, please excuse the ignorance, but will getting the Technosquare ECU upgrade be beneficial to me in term of numbers, etc.? Since they are right around the corner from me, I presume, I can get in and out in a timely fashion if it is worth it for me to spend the $495. Thanks for any inpute.
Some mentioned to me that my AFR is all over the place, still learning what that might mean, please excuse the ignorance, but will getting the Technosquare ECU upgrade be beneficial to me in term of numbers, etc.? Since they are right around the corner from me, I presume, I can get in and out in a timely fashion if it is worth it for me to spend the $495. Thanks for any inpute.
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