Tomas L

It is possible to reprogram DME chips for a MAF without the use of a piggyback.
It is not possible to do that for a MAP, in that case you'll need a piggyback which converts the signal.
As Eclou said, I don't think BMW uses MAP and if they do, they don't do turbos so there would be no MAP with a suitable pressure range.

Tomas

toddk911

Found this. Looks like the Euro models had MAF's.

"E36 M3 Euro Mass Air Flow Sensor
Commonly referred to as "Euro HFM", "Air Flow Meter", "Air Mass Meter", "Mass Air Flow Sensor". This unit is the Original Euro M3 Mass Air Flow Sensor and is a direct replacement for the US M3 Sensor. It will also directly fit onto the Euro Air Box. This unit is 3.5" and increases the volume of air that the engine can use, increasing horsepower. This modification requires a custom chip. "

http://www.vacmotorsports.com/cgi-bi...pl?item_id=314

Dave E

I want to get one of those splitters, anyone else?

toddk911

WOW, just decided to do a search on BMW turbo and found this. Grand Prix racing BMW:

Engine

1499,8 ccm
max 1.500 bhp at 11.000 rpm
turbo: KKK (Germany), later Garrett (USA)
block: cast steel (production based)
fuel: synthetic from Wintershall (Germany)
leasing: DM 153.000 per unit


http://www.research-racing.de/bmwturbo.htm

eclou

all OBD I and OBD II BMW's use the HFM/MAF. All the 6 cyl cars use a 3" HFM, save for the european spec M3's which use the 3.5" unit that all the 8 cylinder cars use. The euro HFM is also called the 540i HFM.

RogueM3

The Euro Hfm upgrade is one of the first mods anyone does to an m3..especially the 95s which are obd1 and which share the male connector with euro motors. The upgrade requires custom software and typically larger injectors (21.5# or 24# depending on whether or not cams will be added later). Just thought I would share and if anyone is interested in one they are for sale at www.turnermotorsport.com or cheaper through bmw classifieds. (just chiming in with info as I have none regarding Porsches )

-RIchard

UK952

Hi Andrew is not a member of rennlist and couldn't join when he tried but he says

The MAP sensor is from a UK 1990 BMW M3 Evo

Tony

UK952

Full details from Andrew below,
Tony

Just for clarification, I can confirm the specification of my car is as follows:

944 Turbo 1989 M030
MAP sensor - there is no restriction prior to the Turbocharger (other than a cone filter)
The MAP sensor is from a UK 1990 BMW M3 Evolution - works like the AFM Link system
Custom DME EPROM
Temp sensor on Intercooler Hard pipe from Turbo
Kokeln Hard Pipes
Kokeln 61# compressor Turbo
Lindsey Racing Stage 2 Intercooler
Siemens 55#/hr Injectors
Adjustable FPR
Wideband UEGO A/F Meter
SPA D94 Digital Boost Gauge and Oil Temp Gauge
2.8 Stroker Conversion (Andial Kit) - using 3.0 litre crank
Custom 2.75" Inlet Pipe to Turbo
Lindsey Racing Breather Tank
Lindsey Racing Dual Port Wastegate
Cockpit Mounted Manual Boost Controller
Bailey Motorsport DV30 Piston Type Dump Valve
422bhp confirmed on the dyno in February 2004 (387 rear wheel bhp) at 6,000 rpm
Over 400lbft torque (estimated)
Boost is set to 1.2 bar (18psi)
Widefire Head Gasket
BERU Silverstone S7 Plugs
Royal Purple Racing 41 Synthetic Oil
Big Red 993 Turbo Callipers
928GTS Disks
911 Turbo 3.6 Pads
202,000 miles recorded
Other than 17" Mille Miglia wheels, rest of car is stock
If anybody has any queries about the car, I'd be happy to answer them.

Regards,
Andrew

slim_boy_fat

Well i thats taken care of that eh.....

slim_boy_fat

Well thats taken care of that eh.....

toddk911

Rouge/Eclou:

Would these MAF's be a more or a plug and play for our cars??? Then other non 951 MAF's??

Danno

"Would these MAF's be a more or a plug and play for our cars??? Then other non 951 MAF's??"

No, any MAF on a 951 would need a customized chip to match. That's because of the increased flow-measuring capability. If you had a MAF that was a direct drop-pin replacement for the stock AFM, then you can use AFM chips, but with severe limitations. Such a MAF would have the same max-flow capacity in the same 0-5v range as the stock AFM. So at 250-270rwhp, you'd max out the MAF just like the stock AFM, no good there.

So you'd want to MAF that can measure about 50% more air than the stock AFM and still output a non maxxed-out clipped 0-5v signal. So a maxed 5v signal on the stock AFM may indicate 300CFM while the same signal on a MAF would be 500CFM. Obviously, you'd need different fuel-values programmed into the chips at that data-cell because the air-flow is different.

The only optimally-programmed MAF + matching-chip combination I've found are the APE units. Probably the best MAF IMHO...

p.s. Can't believe the numbers of times I typed AMAF during this thread, where is that knucklehead anyway?

MichelleJD

Banned.

tifosiman

But still here in disguise. And somewhat grown up. But not completely.

Luis de Prat

Apparently, the UK 951 rocket is already for sale: 911 & P W Ad Here