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Turbo Volvo 240 + best Ecu upgrade

Turbo Volvo 240 + best Ecu upgrade

  #1  
Old 01-16-2019, 06:17 PM
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Join Date: Jan 2019
Location: Ontario, Canada
Posts: 1
Default Turbo Volvo 240 + best Ecu upgrade

Hello ladies & gentlemen! Iíd like to welcome myself to the forum by starting a thread I didnít want to dig for and find.

I have and am currently daily-ing a 1992 Volvo 240 Wagon- that is slower than my grandmothers old Hyundai pony.
i am slowly piecing together a turbo kit for it, using a CX racing ( I know, Chinese) 54/54 turbo.
basically everything on the charge side I have, moving on to ECUís and tuning- Iím aware these cars are MAF and not MAP technology, and the maf wonít be able to read positive pressures.
In this case, does anyone have experience whilst boosting a stock ecu 240? Any input would be appreciated.
If that is in fact a no bueno, can I swap over an earlier 740/760 turbo ecu that will read positive pressures?

Thanks for any help or input!
 
  #2  
Old 01-16-2019, 07:00 PM
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Join Date: Oct 2010
Location: 37 North on the left coast
Posts: 9,825
Default

MAF measures air flow mass regardless of pressure. turbo LH2.4 cars (1990+) use the exact same MAF as non-turbos. (ditto LH2.2 cars used the same MAF whether turbo or not)

the non-turbo ECU will have the wrong map for a turbo configuration, it simply won't go high enough. turbo B230FT engines have 1) lowered compression ratios via a thicker head gasket to prevent knocking, 2) higher flow rate fuel pump, 3) larger injectors. The turbo cars also have the beefier AW71 transmission vs the AW70 used on the non-turbo cars (same gear ratios, just stronger torque converter and bearings and stuff).

you'll find a lot more hotrodding expertise over on the turbobricks.com forum.
 
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