switching from 2G Maf to a Evo8 Maf on a 1G

[coppersmith]

Hello Iam in the process of removing a 2G Maf with a FP 4inch recirculated oval intake to install a Evo8 Maf with a 3inch intake with no recirculation (to get higher readings so iam able to run more boost). Now my question is do I need to be retuned right away even if I left the boost where it is, or can I drive the car the way it is? Also will I be okay with the 3 inch no recirculated intake or will I lose some power etc? thanks in advance for your input

 

[1991GSXAWD]

What are you tuning with? If you just swap the MAF than you will be running extremely lean.

 

[coppersmith]

tuning with eprom chip

 

[1991GSXAWD]

Just to give you a rough idea on fuel needed with specific MAF on a 1g with stock ECU. In your case you could up the fuel pressure if needed to run the EVO 8 MAF say because the 2g MAF is bad. I'm not saying that is the correct way but it will work.

1G MAF=450cc injectors
2G MAF=550cc
Evo8 MAF=650cc

 

[jeffo]

The EVO MAS puts out a Hz frequency MUCH lower than a 2G MAS for the same amount of airflow, so you will be very lean. You really need to put the EVO MAS compensation in your EPROM.

 

[4G63_Attack]

I'm thinking of getting a Evo MAS down the road maybe/maybe not but anyhow, can the AFC compensate the EVO MAS?

 

[habitatguy187]

According to twdorris (ecmlink founder) there is no way you can tune for an evo mass on a 1G using anything besides link or an eprom chip. The airflow values will be so low and your timing so high that you'll blow it up or be stuck at a very low boost level to avoid knock.

The only way I could see it being possible with an safc is to run e85, and even then who knows what kind of timing that will put you at.

 

[8urwrx]

I run an evo 8 mas on my 1g and love it. I have a chip from keydiver. Ill never go back to a 2g mas. Wiring is simple and similar to the 2g. I say go for it as long as you get a chip and or link with it.