who wants the numbers I used in my SAFC when I dyno tuned? I took off the supercharger but no longer have it, if you have a 3.25 pulley, 8:1 disk and a CAI then these numbers will be just fine


4000RPM-------- (-8)

45000RPM------- (-15)

5000RPM--------- (-20)

5500RPM--------- (-22)

6000RPM--------- (-8)

6500RPM--------- (+20)

once again this is for the MEVI, V2 supercharger, 3.25 pulley, CAI and the 8:1 disk users, others may need to adjust the numbers at your own risk, as you can see from 45K-55K we run very rich. Regular manifold users may need less fuel on the upper RPM's. I have adjusted these numbers on a 3.125 pulley user and his V2 and the MEVI, and when he took it to the dyno they looked at him like he was crazy, the numbers I gave him were very very accurate giving him a flat air to fuel ratio chart. I was impressed

 

I DO! I DO! or.....some guy in Rhode Island..??

 

Whatcha getting next? new car?

 

I too am curious about whats next, but thanks alot for posting those #'s. Very generous considering you paid for those.

 

Almost fits my criteria, damn. I'm making about the same boost as you did with my V1/3.125". But i'm still on US spec manifolds and am too scared to risk it.

 

take it to a dyno if you have the SAFC is really simple to do the adjustments. I will be doing my own adjustments next time since I found a new dyno place that lets you tune the car, but you are on your own

 

Thanks, Jay, you're a scholar and a gentleman. This confirms my suspicions that the 8:1 disk is pretty rich for the 3.25" pulley, but the MEVI more than makes up for it once you get to high rpm.

 

8:1 is ideal and is best to be keep it rich vice lean, at least you ll have better chance to shift @63K vice 6K. V1 guys you guys can plug these numbers in, I may boost sooner then you guys but is only 1-1.5PSI may still be slightly rich but not as rich

 

Jay when are your V8 buddies letting us dyno at their place? we can test these numbers on my car :-D

 

I have to call that guy and ask him whats the deal with his number Ill call him and let you guys know whats the deal, the good news is that I now know how to mess with the SAFC, how ever you have a 6:1 disc so your numbers I am clueless about because you might be on the money which explains your high numbers

 

get a cartech fmu.. you wont have those issues of running rich during the powerband, just at idle.. if anything a tad rich.

 

But you still have to adjust it based on a dyno run. With the Cartech you adjust fuel pressure vs rpm instead of injector duty cycle vs rpm.

 

how can using the SAFC to enrichen in the top end
"6500RPM--------- (+20)" work with the 3.125 pulley and mevi....i thought right around 6000rpms or so, you would be maxing out the a32 maf and the safc wouldn't work...not to mention the injectors would be maxed out, so you wouldn't be able to richen anything up even if the maf was still not maxed out...???!!!??!!! how would this work...and what kind of gain did you get from it?

 

Jay can't answer this question. He left the country. I can tell you this, he made 320 WHP and ~280 WTQ

And there is no exact rpm you max out the a32 maf, it's based completly on your cars HP.

 

you wouldnt be maxing out the MAF unless you were using a JWT ECU (MAF referenced tune). when using the FMU you wont be maxing out the MAF since the fuel adjustment is not based on its reading. with the FMU the fuel is adjusted according to vacuum/boost pressure using the ratio disk inside of the FMU.

jay was running an FMU and not a JWT ECU.

I run the JWT ECU, A32 MAF, 370cc injectors, 3.125 pulley and i am not yet maxing out the MAF or the injectors even to 7200 rpms. although i am sure it is very close.

--Paul

 

If Jay was making 320 whp, then he was most definitely maxing out his A32 maf at some point before redline. The A32 maf can meter at most about 350 hp, which translates to 290 or so at the wheel. That's one of the reasons for using an fmu, after all.

I have a fuel injection duty cycle meter, and I know I was hitting 100% right at redline back when I was running the A32 maf and the Vortech fmu. With the Z32 maf and JWT ecu I'm seeing about 60-70% duty cycle at 7200 rpm.