SR20 Mass Air Flow on CA?

Post by **TheSilviaGuy** » Wed Apr 13, 2011 1:58 pm

hey, I have had computer issues and had to swap out the tuned ecu, now with the new ecu, it won't read my RB26 MAF. I am selling this car soon so I'm looking for a cheap-ish fix (ie. no safc or sending the ecu out), and I would also like to keep my RB26 MAF for my other Silvia. So, I have a spare SR20 MAF and was wondering if I could wire it up somehow? I found a way that a KA-E MAF would work. But I don't have one on hand. If I can't wire up the SR20 MAF, I will go the KA-E route.

Post by **boost_boy** » Wed Apr 13, 2011 5:02 pm

TheSilviaGuy wrote:hey, I have had computer issues and had to swap out the tuned ecu, now with the new ecu, it won't read my RB26 MAF. I am selling this car soon so I'm looking for a cheap-ish fix (ie. no safc or sending the ecu out), and I would also like to keep my RB26 MAF for my other Silvia. So, I have a spare SR20 MAF and was wondering if I could wire it up somehow? I found a way that a KA-E MAF would work. But I don't have one on hand. If I can't wire up the SR20 MAF, I will go the KA-E route.

Go the KA-E route and forget the SR20 crap.

Post by **TheSilviaGuy** » Sat Apr 16, 2011 8:46 am

I've got a KA24E MAF now, but my friend could not find the connector on his harness and neither could I. Is there anything I could try to do to wire up my SR20 MAF for now? I'd like to get this car moving asap. The SR20 MAF and KA24E look the same, but have different part numbers and different connectors.

I may look into ordering just a connector, but being such an old vehicle, I doubt I'll find anything.

Post by **boost_boy** » Sun Apr 17, 2011 6:12 am

TheSilviaGuy wrote:I've got a KA24E MAF now, but my friend could not find the connector on his harness and neither could I. Is there anything I could try to do to wire up my SR20 MAF for now? I'd like to get this car moving asap. The SR20 MAF and KA24E look the same, but have different part numbers and different connectors.

I may look into ordering just a connector, but being such an old vehicle, I doubt I'll find anything.

No. Don't even bother. If you can't find one, I have a KA-E AFM that I'm not using. Don't go experimenting or you may make matters worst.

Post by **float_6969** » Thu Apr 21, 2011 8:02 pm

You can't use the SR20 MAFS on the CA. It'll run like crap. The KA-E MAFS might work, but it won't run great. There isn't a direct replacement for the CA MAFS except for another CA MAFS.

Post by **Anu** » Fri Apr 22, 2011 3:25 am

I am running a CA18det on an S14 MAF ( partnr S14-RNN14-W10-SR20DET), but my car has been mapped for it. I dont think it will run at all on a stock ECU.

Post by **s1390** » Tue Apr 26, 2011 3:25 am

float_6969 wrote:You can't use the SR20 MAFS on the CA. It'll run like crap. The KA-E MAFS might work, but it won't run great. There isn't a direct replacement for the CA MAFS except for another CA MAFS.

People switch over to Z32 MAFS all the time and i know your right that there isn't a direct replacement for the CA MAFS except for another CA MAFS but other MAFS will work

Post by **float_6969** » Tue Apr 26, 2011 6:22 am

Other MAFS will work, IF you tune the ECU to accept them, or use a piggy back to modify the signal. You can't just wire one up and have it work.

Post by **s1390** » Tue Apr 26, 2011 8:52 am

So just curious what would the symptoms be if someone had the wrong MAF wired in? Would the motor spit or backfire because i have a friend with a ca and it spits at idle.

Post by **boost_boy** » Tue Apr 26, 2011 2:14 pm

s1390 wrote:So just curious what would the symptoms be if someone had the wrong MAF wired in? Would the motor spit or backfire because i have a friend with a ca and it spits at idle.

He should check his computer to see what code is being displayed. If he is running an AFM other than the one the ecu was calibrated to operate, then he is going to have a disgruntled car.

Post by **s1390** » Tue Apr 26, 2011 7:57 pm

boost_boy wrote:
s1390 wrote:So just curious what would the symptoms be if someone had the wrong MAF wired in? Would the motor spit or backfire because i have a friend with a ca and it spits at idle.
He should check his computer to see what code is being displayed. If he is running an AFM other than the one the ecu was calibrated to operate, then he is going to have a disgruntled car.

Your 100% right.. I checked the part number on his MAF and this is what I found 22880 40F00 AFH50-04

Post by **s1390** » Tue Apr 26, 2011 7:59 pm

I was also curious if anyone has switched to a MAP sensor and if it is possible to do with nistune

Post by **float_6969** » Tue Apr 26, 2011 9:56 pm

Easiest way to run MAP is to switch to a standalone. I'm running an SDS EM4-F and I love it. I'll never go back to a MAFS again.

Post by **s1390** » Wed Apr 27, 2011 12:00 pm

Thats awesome thanks for the info

SR20 Mass Air Flow on CA?

SR20 Mass Air Flow on CA?

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