S40 (New) Engine 2.4 : - Power upgrade via ECU map?

S40wit · Jan 6th, 2014, 14:30

EFI is my hobby. I have installed Megasquirt ECUs on several Rover V8 and Jaguar V12's. My most recent project was converting a Jensen Interceptor Mk3 (7.2L) to EFI.

From these projects I have learnt the max power comes at an AFR of about 13.

My 2.4 Normally aspirated Volvo seems to run at 14.7 under ALL conditions.

Is there then not be untapped potential to be had with a fuel map that calls for richer AFRs around full throttle?

noney82 · Jan 6th, 2014, 15:00

Over my head but sounds interesting :-)

Daim · Jan 6th, 2014, 15:31

The 2.4 can be updated via software to a 2.4i... Software used to be available from Heico but you can probably get it from BSR, Rica and co.

S40wit · Jan 6th, 2014, 18:04

Quote:

Originally Posted by Daim

The 2.4 can be updated via software to a 2.4i.

Do you know what the difference is between the 2.4 and 2.4i?

iainmd · Jan 6th, 2014, 18:33

About 30 horsepower.

S40wit · Jan 6th, 2014, 18:37

Quote:

Originally Posted by iainmd

About 30 horsepower.

That is not insignificant! What hardware / software is needed to upgrade the ECU?

Daim · Jan 6th, 2014, 19:01

Just software. The 2.4 is a detuned 2.4i so mechanical bits and bobs are equal. It really is only the mapping which differs.

S40wit · Jan 6th, 2014, 19:06

Quote:

Originally Posted by Daim

Just software. The 2.4 is a detuned 2.4i so mechanical bits and bobs are equal. It really is only the mapping which differs.

Now it sounds like the 2.4 and 2.4i are two different models. My car says "2.4i" on the boot. Does that mean its already the upgraded model?

Daim · Jan 6th, 2014, 19:27

Yes, that is why it is important to write the ENTIRE type and not simply "2.4"

The S40/V50 and C70 were sold as 2.4 OR 2.4i.

If you already have a 2.4i then you won't get a pony more...

S40wit · Jan 7th, 2014, 10:01

Quote:

Originally Posted by Daim

If you already have a 2.4i then you won't get a pony more...

I could be wrong of course but I still believe that with richer mixtures towards full throttle, there should be "more".

Thankfully this Volvo is my wife's town commuter. I have a 7.2L Jensen Interceptor (EFI'ed) to entertain me!

Jan 6th, 2014, 14:30	#1
S40wit New Member Last Online: Jul 25th, 2016 15:52 Join Date: Dec 2013 Location: Pretoria	Power upgrade via ECU map? EFI is my hobby. I have installed Megasquirt ECUs on several Rover V8 and Jaguar V12's. My most recent project was converting a Jensen Interceptor Mk3 (7.2L) to EFI. From these projects I have learnt the max power comes at an AFR of about 13. My 2.4 Normally aspirated Volvo seems to run at 14.7 under ALL conditions. Is there then not be untapped potential to be had with a fuel map that calls for richer AFRs around full throttle? __________________ Best regards Philip ----------------- '04 S40 2.4i Auto

Jan 6th, 2014, 15:00	#2
noney82 Master Member Last Online: Dec 31st, 2021 01:00 Join Date: Jul 2012 Location: manchester/Stockport	Over my head but sounds interesting :-) __________________ http://giffgaff.com/orders/affiliate/noney82 click link to order a sim and experience great PAYG offers and £5 free credit when you sign up

Jan 6th, 2014, 15:31	#3
Daim Brit in Germany Last Online: Today 16:43 Join Date: Jan 2011 Location: Bremen	The 2.4 can be updated via software to a 2.4i... Software used to be available from Heico but you can probably get it from BSR, Rica and co. __________________ The Best Nation Is Imagination 2010 V70 (Type 135) D5 (D5244T10) Automatic (TF-80SC)

Jan 6th, 2014, 18:33	#5
iainmd Member Last Online: Today 11:14 Join Date: Nov 2004 Location: Fife View Photos By: iainmd	About 30 horsepower. __________________ Present: 2009 Volvo V50 1.6D DRIVe SE Past: 2004 Volvo S40 T5 SE

Jan 6th, 2014, 19:01	#7
Daim Brit in Germany Last Online: Today 16:43 Join Date: Jan 2011 Location: Bremen	Just software. The 2.4 is a detuned 2.4i so mechanical bits and bobs are equal. It really is only the mapping which differs. __________________ The Best Nation Is Imagination 2010 V70 (Type 135) D5 (D5244T10) Automatic (TF-80SC)

Jan 6th, 2014, 19:27	#9
Daim Brit in Germany Last Online: Today 16:43 Join Date: Jan 2011 Location: Bremen	Yes, that is why it is important to write the ENTIRE type and not simply "2.4" The S40/V50 and C70 were sold as 2.4 OR 2.4i. If you already have a 2.4i then you won't get a pony more... __________________ The Best Nation Is Imagination 2010 V70 (Type 135) D5 (D5244T10) Automatic (TF-80SC)

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