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jecs maf question
Posted: Sat Nov 22, 2008 4:41 am
by jefferson
I picked up a jecs maf from the pick and pull in preparation for the stage 1 chip yesterday and to me it looks like it is missing something. There is an area on the interior that is necked down appx. 4mm. all the way around. The downstream side is tapered down as it should be, but the upstream side is just a right angle edge. It almost looks like something should butt up against it. Is this the way all the jecs mafs are or is this one missing something. I would think that edge sticking out would be very detrimental to flow.
Could some people take a look at theirs and tell me if this the way it is supposed to be.
I just thought of another way I can find out. All the cars at the pick and pull had jecs mafs on them. I could just pull several more off and see what they look like.
If anyone has one sitting on a shelf they can look at easily let me know. Thanks.
Jeff
Posted: Sat Nov 22, 2008 9:00 am
by 94SS_Canada
Posted: Sat Nov 22, 2008 1:02 pm
by jefferson
It's the upstream side that has the edge I'm talking about. The downstream side has the taper to it as you can see in the picture. The picture would have to be from the other end of the maf. Thanks for jumping right on that.
Jeff
Posted: Tue Jan 13, 2009 2:31 am
by log1call
No rush Bro. You are just getting ready to do some mods right? So what's the rush?. I'll have a look at the spare one in my shed for you... TOMORROW!
Posted: Sun Jan 18, 2009 6:22 am
by jefferson
I never mentioned anywhere I was in a big rush. This thread is even a couple of months old.
Posted: Tue Jan 20, 2009 8:42 pm
by RJ93SS
log1call wrote:No rush Bro. You are just getting ready to do some mods right? So what's the rush?. I'll have a look at the spare one in my shed for you... TOMORROW!
wtf?
Posted: Sun Jan 25, 2009 1:17 pm
by Dynamic Entry
humor is subject to extreme ambiguity on forums, I think that was an attempt....
Posted: Sun Jan 25, 2009 4:53 pm
by Grayguy
Not to go too far off topic, but what car's came with the Jecs's maf? I dont' suppose the one off my 98 2.5GT is the one I want?
Posted: Tue Feb 17, 2009 5:14 am
by SILINC3R
ok what the heck is the JECS thing. i went to a pull a part today and i saw something going to the intake that said JECS on it. i have a 89 LEG LS. i dont have one.
Posted: Tue Feb 17, 2009 5:22 am
by jefferson
The ss comes with an Hitachi maf that has an aluminum body. There are alot of other models that come with the plastic jecs maf which flows more air. The ecu will not accept a different ecu than what it came with unless you do something like get a revtronic chip that is set up for the jecs.
Jeff
Posted: Tue Feb 17, 2009 5:26 am
by SILINC3R
however i do have an aluminum (MAP)? sensor on mine. is MAP the older one. i think the previous owner baught it from Kartboy back in the day
Posted: Mon Apr 06, 2009 3:30 am
by reddragons
SILINC3R wrote:however i do have an aluminum (MAP)? sensor on mine. is MAP the older one. i think the previous owner baught it from Kartboy back in the day
correct me if i'm wrong, the aluminum version is just the hitachi MAF (mass air flow) not, MAP (manifold absolute pressure)....i think. the mafs, are just a little different.
