Stock ECU MAF replacement project

[prj]

Seems that I need to change the turbo to a HX40 super. Any info about the specs, turbo, cams, head, injectors etc..?

China rods, stock pistons, 7A cams, built head, completely maxed 630cc injectors at 4 bar, relayed 044 pump.
HX40 Super is a bit too much, at least if you want to drive it on your street, just like this GT35R. At least in my opinion...

I'd say a HX35 or a GT30R is all that is needed.

[Thuppu]

Maxed out the RS4 HFM5 with the help of my friend Jason at AMD:

540whp (~700 crank), M2.3.2.

Seems that I need to change the turbo to a HX40 super. Any info about the specs, turbo, cams, head, injectors etc..?

[prj]

Yes, yes...

[Rocco]

I think people understood that the first three times you said it

Anyway, yeah, this is for custom mapped setups.
And doing Ross' car is not a problem, if he chooses this route, as I'll be over in the UK in October...

and in the north of Spain too true??

[prj]

Remember it is only with PRJ tuning not for generic use

I think people understood that the first three times you said it

Anyway, yeah, this is for custom mapped setups.
And doing Ross' car is not a problem, if he chooses this route, as I'll be over in the UK in October...

[Rocco]

i am using this Maf since April,with k26/27 and k24 7200 turbos and all perfect, i am very happy with it and of course with Dmitri´s work.

also big thanks to Jason too

[S2central.net]

That is an impressive result alright... must be a record for 20yr old motronic - as it left the factory (well except for a sneaky MAF improvement)... good that Mr Bosch left so much headroom in the scaling.

[AMD]

Cool, I have been chatting with Jason about this project, but didn't know that you guys cooperated (had a hunch, though )
Here is my graph, probably maxing out the RS2 MAF by some margin... right under 440whp/460wtq on E85:

Safe to say a large margin... Dyno sheet looks good!

[Ross]

Remember it is only with PRJ tuning not for generic use

Yup, well at least with PRJ rescaling of the MAF signal - once that is done I assume any proficient motronics tuner could do the rest... I would be interested to know if one could supply an ECU that could then be re-calibrated to use the RS4 MAF with the existing MAP - from PRJ's comment that there is a small margin of error I assume this could be done?

Of course, the intention would be to get the car fully mapped to take advantage of the extra range...

[Jamo]

So the RS4 MAF would be the one to use on an RS2 with 400-500 hp?

Remember it is only with PRJ tuning not for generic use

[Ross]

So the RS4 MAF would be the one to use on an RS2 with 400-500 hp?

[EspenW]

Cool, I have been chatting with Jason about this project, but didn't know that you guys cooperated (had a hunch, though )
Here is my graph, probably maxing out the RS2 MAF by some margin... right under 440whp/460wtq on E85:

[Rocco]

Very good.... I want to break that limit too.

[prj]

Maxed out the RS4 HFM5 with the help of my friend Jason at AMD:



540whp (~700 crank), M2.3.2.

[prj]

The only reason to change on a chipped car is when your MAF fails you won't have to pay 275 EUR anymore.
In the even the HFM5 should fail, you can change the sensor core for 60 EUR.