MAP ECU on SC400
#1
MAP ECU on SC400
One of the things I'll be doing this winter is getting a MAP ECU and wideband.
On the SC400 we have a karman type AFM. If I use MAP ECU, AFM would be eliminated all together correct?
Right now i have stock AFM with S-AFC and I was thinking if I go MAP ECU with wideband I can get rid of the AFM and S-AFC.
Am I understanding this right?
thanks
On the SC400 we have a karman type AFM. If I use MAP ECU, AFM would be eliminated all together correct?
Right now i have stock AFM with S-AFC and I was thinking if I go MAP ECU with wideband I can get rid of the AFM and S-AFC.
Am I understanding this right?
thanks
#4
Lexus Champion
iTrader: (1)
Actually it would be worth the performance gains. Although many have said and tested that nothing outflows the Stock/BFI air box on the pre 97's. The MAF is the reason why. No matter how big a pipe you put on the intake, it will flow no more than the smallest restriction will allow.
The Map ECU will tune some out but... it is a ***** to tune, and on a N/A motor I have read about many trying to tune it out with countless hours of tunning and tunning, only to still have driveability problems in the open loop mode.
Some have also thied to use the Ford MAF or GM which are less restrictive, but I still have yet to see anyone who has done it other that a High HP turrbo or someone using the HKS unit. If someone has done it, I would like to know how and who.
The Map ECU will tune some out but... it is a ***** to tune, and on a N/A motor I have read about many trying to tune it out with countless hours of tunning and tunning, only to still have driveability problems in the open loop mode.
Some have also thied to use the Ford MAF or GM which are less restrictive, but I still have yet to see anyone who has done it other that a High HP turrbo or someone using the HKS unit. If someone has done it, I would like to know how and who.
#5
Originally Posted by jgscott
Actually it would be worth the performance gains. Although many have said and tested that nothing outflows the Stock/BFI air box on the pre 97's. The MAF is the reason why. No matter how big a pipe you put on the intake, it will flow no more than the smallest restriction will allow.
The Map ECU will tune some out but... it is a ***** to tune, and on a N/A motor I have read about many trying to tune it out with countless hours of tunning and tunning, only to still have driveability problems in the open loop mode.
Some have also thied to use the Ford MAF or GM which are less restrictive, but I still have yet to see anyone who has done it other that a High HP turrbo or someone using the HKS unit. If someone has done it, I would like to know how and who.
The Map ECU will tune some out but... it is a ***** to tune, and on a N/A motor I have read about many trying to tune it out with countless hours of tunning and tunning, only to still have driveability problems in the open loop mode.
Some have also thied to use the Ford MAF or GM which are less restrictive, but I still have yet to see anyone who has done it other that a High HP turrbo or someone using the HKS unit. If someone has done it, I would like to know how and who.
Currently there are MAP ECU's that have "learn mode" even though a baseline fuel map is not available. From the briefs I gathered that the map ecu will copy settings as you drive your car around with factory ecu and afm still in place. After driving across all revv band ranges it will take the settings and use it as a base fuel map. So the technology seems to have stepped up since the vpc days..... In any case to get ITB's map ecu is mandatory, but I just wanted some clarification.
Thanks
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#9
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Originally Posted by jtucci
...anything to get rid of the MAF.
VSsc400: It is not mandatory to run itb's on a maf based car. All you would need is an air box . I can totally see why you would want to convert to speed density with itbs .
#10
if theres a somewhat cost effective way to get rid of the MAF, i would do it. but i also agree with you on some points. i had a 2003 mitsu lancer which was worked up w/ turbo and it made 200+ whp just fine with maf in place. i've even seen the lancer run high 12s with maf still in place. this is the regular lancer.. not the evo. so... even more reason maf isnt as bad as one might think.
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