1400r Posted September 16, 2012 Share Posted September 16, 2012 (edited) Hi guys came across a couple of articles when I was in Japan about the tuners there using gtr airflow meters as a upgrade on earlier gtr's 32,33 and 34 and also on SR's most tuners were quoting better response, no stalling and more power in some cases got me keen to try one out on my car also these sensor are easily replaceable and cheaply (compared to z32 afm at $395) to buy as you can get just then sensor itself they can also be fitted to alloy piping easily and be fitted on the hot side if required I sourced one from Japan but ended up selling it to the nisstune guys and making up my own kits I contact the guys at nisstune to help me out with getting it tuned and they were keen as they got a vq map to suit and can now tune any nisstune to suit the 35 air flow meters below is the results for my car it feels better response wise alot more linear and no ldle down stalling )))))))))))))))))))))))))) in z32 airflow meter size piping (i.e 80mm) they do top out around 300rwkw above that you would order it to suit bigger piping my car had had z32 550cc sards and nisstune so pre tuned but my tuner reviewed it and made a couple of small changes now has 35 afm 550cc sards and nisstune and retune to suit same dyno same boost level used for both runs will be testing with my mate the bigger pipe size ones on his 380rwkw rb25 r32 then once test can supply those to contact me via pm if you keen as I bought a few test examples to try out ps I just like trying out the new tings there doing in Japan to see why there keen pricing is way under a new z32 and I'm selling the extra ones I got off as complete replacement units so afm pipe plug super keen to try these out on a gtr if I get enough interest I'll make some more kits up Edited September 16, 2012 by R31Nismoid Link to comment https://www.sau.com.au/forums/topic/409392-r35-gtr-air-flow-meter-the-new-z32-afm/ Share on other sites More sharing options...
R31Nismoid Posted September 16, 2012 Share Posted September 16, 2012 in z32 airflow meter size piping (i.e 80mm) they do top out around 300rwkw above that you would order it to suit bigger piping A Z32 maxes out @ 300rwkw in stock piping? Since when? First I've heard of this and plenty of people have made well beyond that. From your graph results, it just looks like the dyno has been done with a different ramp rate rather than any actual improvement. I find it hard to believe just a AFM/air sensor swap would give you an extra 40rwkw @ 3500rpm. Do you have the original print out of the blue run, before it was overlayed? Link to comment https://www.sau.com.au/forums/topic/409392-r35-gtr-air-flow-meter-the-new-z32-afm/#findComment-6535151 Share on other sites More sharing options...
DVS JEZ Posted September 16, 2012 Share Posted September 16, 2012 Also please put boost instead of torque. Was vct working on the blue run? Whats the actual cost ofthe sensor? Link to comment https://www.sau.com.au/forums/topic/409392-r35-gtr-air-flow-meter-the-new-z32-afm/#findComment-6535157 Share on other sites More sharing options...
Dale FZ1 Posted September 16, 2012 Share Posted September 16, 2012 The three cited factors ie. easier packaging/install into existing/custom pipes; and price sound like compelling reasons to give one a try if running an AFM setup. Eliminating stalling would be a significant improvement as anyone who's gone through that saga would testify. It is only a sensor that measures airflow, so provided the fuel mapping is correct and the AFR in desirable range, difficult to see ANY reason why there would be more more torque at any given rpm UNLESS total airflow (boost) is changed. Before/after graph overlays please, as above comment by Jez. Link to comment https://www.sau.com.au/forums/topic/409392-r35-gtr-air-flow-meter-the-new-z32-afm/#findComment-6535167 Share on other sites More sharing options...
1400r Posted September 16, 2012 Author Share Posted September 16, 2012 (edited) A Z32 maxes out @ 300rwkw in stock piping? Since when? First I've heard of this and plenty of people have made well beyond that. From your graph results, it just looks like the dyno has been done with a different ramp rate rather than any actual improvement. I find it hard to believe just a AFM/air sensor swap would give you an extra 40rwkw @ 3500rpm. Do you have the original print out of the blue run, before it was overlayed? my post say's in z32 pipe size ie 80mm the gtr afm do max out at 300rwkw so if you want over 300rwkw in single afm application you would stepup the pipe size as they do with gtr's there say power on the Japanese website I guess from less restriction however I wasn't expecting more power and you wouldn't do the swap for that reason but for all the other reasons are I posted the dyno cause everyone would have asked otherwise vct was working ramp rate I assumed was the same guess not however as said I didn't care about the power I cared how it drove (alot better smoother) and didn't stall afterwards check out yashio factory and hpi's japanese websites both big name japanese tuners do these upgrades now to both gtr's and sr it did it as I was keen to try out something new out of Japan interesting neither the less and you can thank me later for putting my $ up as a test run boost was the same on both runs as stated and nisstune took that graph for his records here's 2 graph's that I found not sure its what your after shows boost Edited September 16, 2012 by 1400r Link to comment https://www.sau.com.au/forums/topic/409392-r35-gtr-air-flow-meter-the-new-z32-afm/#findComment-6535213 Share on other sites More sharing options...
1400r Posted September 16, 2012 Author Share Posted September 16, 2012 sensors gen nissan is around $200 can get cheaper copy sensors but untest who knows what you'll end up with my leftovers with tested sensors I'll sell each one for $250 full kit pipe plug sensor and wire diagram Link to comment https://www.sau.com.au/forums/topic/409392-r35-gtr-air-flow-meter-the-new-z32-afm/#findComment-6535230 Share on other sites More sharing options...
R31Nismoid Posted September 16, 2012 Share Posted September 16, 2012 my post say's in z32 pipe size ie 80mm the gtr afm do max out at 300rwkw so if you want over 300rwkw in single afm application you would stepup the pipe size as they do with gtr's And i said that it doesn't. The sensor in stock Z32 80mm housing will have the resolution for over 300rwkw in singular form. GTR AFM's are not 80mm. Nismo replacements which are similar to a Z32 also do not have issues @ 300rwkw given you have two of them. So again not sure what you are trying to get at because the results clearly show otherwise in almost every single instance. I've never seen anyone max a Z32 @ 300rwkw in 80mm form. there say power on the Japanese website I guess from less restriction however AFMs are not a restriction. So again - guessing isn't good enough. however as said I didn't care about the power I cared how it drove (alot better smoother) and didn't stall afterwards So it just sounds like you had a poor setup prior? Be that tune of AFM. I've had various AFM setups (factory & custom) for years and never had any stalling issues to speak of. Stalling comes down the tuner ability & also the AFM position. Unfortunately a lot of people get the AFM position wrong and then blame the AFM when it's actually their own fault for putting it too close to the turbo inlet and the reverb causes issues. Link to comment https://www.sau.com.au/forums/topic/409392-r35-gtr-air-flow-meter-the-new-z32-afm/#findComment-6535231 Share on other sites More sharing options...
1400r Posted September 16, 2012 Author Share Posted September 16, 2012 (edited) again read my post in z32 pipe size a 35 GTR AFM WILL MAX OUT AT 300 rwkw nothing to do with a z32 apart the pipe is the same size making it a swap over how many 600rwkw 35 gtr's have you seen with stock piping and afm's? how many over 300rwkw z33 with stock piping and stock afm have you seen Ive miss written my first post or you've miss read it I don't need to guess but I did for you as I'm not saying it'll make power yashio hpi do go argue with them my tuner i.e Pete from Nisstune(heard of them?) said every sr he's seen with a z32 doesn't run 100% regardless of who tuned it especially if your running it in front of a big turbo these afm have no reverb issues have had idle/stall issues with 3 different tuned by z32 sr combos Edited September 16, 2012 by 1400r Link to comment https://www.sau.com.au/forums/topic/409392-r35-gtr-air-flow-meter-the-new-z32-afm/#findComment-6535243 Share on other sites More sharing options...
WMDC35 Posted September 16, 2012 Share Posted September 16, 2012 (edited) i didn't get gains like that removing the z32 afm, and had no stalling issues were they old f'd afms? or cheap after market? Edited September 16, 2012 by WMDC35 Link to comment https://www.sau.com.au/forums/topic/409392-r35-gtr-air-flow-meter-the-new-z32-afm/#findComment-6535244 Share on other sites More sharing options...
1400r Posted September 16, 2012 Author Share Posted September 16, 2012 (edited) your's a sr mate? see my point? both were gen nissan z32 not sure how old either were Edited September 16, 2012 by 1400r Link to comment https://www.sau.com.au/forums/topic/409392-r35-gtr-air-flow-meter-the-new-z32-afm/#findComment-6535248 Share on other sites More sharing options...
WMDC35 Posted September 16, 2012 Share Posted September 16, 2012 did you try a + in the intake pipe at the turbo end? fixed the stalling issues round these ways, unless it's too close Link to comment https://www.sau.com.au/forums/topic/409392-r35-gtr-air-flow-meter-the-new-z32-afm/#findComment-6535256 Share on other sites More sharing options...
1400r Posted September 16, 2012 Author Share Posted September 16, 2012 not sure what a + is mate afm was in factory position in front of a t28 2 tune's and in front of a 2835 in factory spot with the other applications tune's your all missing all the postive points and just looking at the power replacement cost new z32 is $395 hot pipe fitment ease ahlar map style if you pop a hot side cooler pipe response/smoother no stalling Link to comment https://www.sau.com.au/forums/topic/409392-r35-gtr-air-flow-meter-the-new-z32-afm/#findComment-6535259 Share on other sites More sharing options...
1400r Posted September 16, 2012 Author Share Posted September 16, 2012 (edited) eh rr means ramp rate right? both say 150 again though forget the min power "gain" that could be the temp difference anyway or something Edited September 16, 2012 by 1400r Link to comment https://www.sau.com.au/forums/topic/409392-r35-gtr-air-flow-meter-the-new-z32-afm/#findComment-6535263 Share on other sites More sharing options...
R31Nismoid Posted September 16, 2012 Share Posted September 16, 2012 again read my post in z32 pipe size a 35 GTR AFM WILL MAX OUT AT 300 rwkw Right so in one line you are saying this: A R35 GTR AFM into a Z32 housing, that then maxes out @ 300rwkw. So in effect you are taking a step back because the original Z32 would flow more than 300rwkw. your all missing all the postive points and just looking at the power hot pipe fitment ease ahlar map style if you pop a hot side cooler pipe response/smoother no stalling From the pictures your original AFM is far too close to the turbo inlet so it comes as little surprise you have driveability problems. I know people with SR's under 300rwkw and AFMs and none of them have any of the issues you are talking about. This is all just sounding like you had a setup with issues and you've simply fixed them in a round-a-bout type of way rather than their actually being any real gains, aside from the very strange dyno results. Could perhaps be the tune was given more attention as well. Link to comment https://www.sau.com.au/forums/topic/409392-r35-gtr-air-flow-meter-the-new-z32-afm/#findComment-6535276 Share on other sites More sharing options...
rob82 Posted September 16, 2012 Share Posted September 16, 2012 A lot of the newer style afm run a sample tube rather than just hanging the element in the airflow. This helps to stop the issues seen with airflow reversion. Link to comment https://www.sau.com.au/forums/topic/409392-r35-gtr-air-flow-meter-the-new-z32-afm/#findComment-6535282 Share on other sites More sharing options...
1400r Posted September 16, 2012 Author Share Posted September 16, 2012 (edited) I fitted one of these to see what the fuss was about no other reason 35 gtr's run 80mm piping factory it just happen's to match the size of a z32 what do you do when a z32 maxes out? with a 35 gtr afm you just fit a bigger pipe in terms of only outright power reading ability in a 80mm pipe yes a step backwards however upsize the pipe diameter (same as the do with 35 gtr's) and no problem reading higher in terms of cost, replacement ease etc there still a step forward the afm is in the stock postion fact is 35 gtr afm has no problem there z32 does you need to look at it this way if you were setting a car up you'd go these in whatever pipe size you needed to read correctly your output rather than using z32's now you wouldn't pull your z32's off if your not having stalling issues like all the sr guys are unless your z32 shat itself or something Edited September 16, 2012 by 1400r Link to comment https://www.sau.com.au/forums/topic/409392-r35-gtr-air-flow-meter-the-new-z32-afm/#findComment-6535283 Share on other sites More sharing options...
1400r Posted September 16, 2012 Author Share Posted September 16, 2012 (edited) http://www.yashiofactory.co.jp/ http://www1.ocn.ne.jp/~p-craft/ http://www010.upp.so-net.ne.jp/rio/ http://tsugio-blog.com/?day=20110822 http://apmshop.ocnk.net/product/1 http://www1.ocn.ne.j...-craft/top.html finding all these was reason enough for me to wanna try them out "We will divert the air flow meter of your suggestions 35GTR from this year. I had been testing the demo car at 34 because it was anxious from people before. Although it takes a little time so we have also tested various types of engines in other vehicles as well, I was also able to take various data. Airflow specification, I think I can come and have another consultation embarrassed person or stall the airflow, such as trouble in RB26. I think that there is no downside as listed, such as Rev G Maga. I will come to quite different, such as smooth rise of low-and medium-speed rotation torque is also up more than 34 of the demo car, even until now, I have happily low-speed torque is even more easy to get out of the normal 34. I think cost is the initial investment it takes to become absolutely necessary adapting the computer when the air flow of the 35R, the benefits of the way, it's just that there. I might change it as great over a little. Please call the world is anxious." Edited September 16, 2012 by 1400r Link to comment https://www.sau.com.au/forums/topic/409392-r35-gtr-air-flow-meter-the-new-z32-afm/#findComment-6535299 Share on other sites More sharing options...
Dale FZ1 Posted September 16, 2012 Share Posted September 16, 2012 If using this setup reduces setup or AFM positioning "issues" and at a lower up-front price, then I say go for it. Link to comment https://www.sau.com.au/forums/topic/409392-r35-gtr-air-flow-meter-the-new-z32-afm/#findComment-6535575 Share on other sites More sharing options...
89CAL Posted September 16, 2012 Share Posted September 16, 2012 So they will bolt onto any size pipe and handle over 300rwkw and is cheaper than a Z32. Next question, how hard is it to get it to work with power fc, I'm guessing not to bad just a matter of playing with the settings, but have no idea how to do this Would be interested if my Z32 decides to die so I can do a full 4" intake Link to comment https://www.sau.com.au/forums/topic/409392-r35-gtr-air-flow-meter-the-new-z32-afm/#findComment-6535677 Share on other sites More sharing options...
JonnoHR31 Posted September 16, 2012 Share Posted September 16, 2012 So they will bolt onto any size pipe and handle over 300rwkw and is cheaper than a Z32. Next question, how hard is it to get it to work with power fc, I'm guessing not to bad just a matter of playing with the settings, but have no idea how to do this Would be interested if my Z32 decides to die so I can do a full 4" intake Once you have an airflow map for it, it'd be a piece of cake to setup with a PFC. Getting the map would be the hard part. Link to comment https://www.sau.com.au/forums/topic/409392-r35-gtr-air-flow-meter-the-new-z32-afm/#findComment-6535688 Share on other sites More sharing options...
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