modded MAF??

gvanminnen · Post by **gvanminnen** » Sat Aug 01, 2009 7:50 pm

I read some things about modded MAF's but not how this works?

Somebody who can tell me how I can tune my MAF and what is the differents?

Ettore Bugatti · Post by **Ettore Bugatti** » Sat Aug 01, 2009 10:31 pm

Look for post of rpruen and/or tobi480turbo. They had a nice topic called tuning ecu's or something similiar a few years a go (2005?)

The end result was 240hp (from a B20F, though)

gvanminnen · Post by **gvanminnen** » Sun Aug 02, 2009 9:30 am

I have looked for it but no results. I will search again. THX.

gvanminnen · Post by **gvanminnen** » Sun Aug 02, 2009 9:57 am

I can't find it, but saw something about a saab MAF but no explanation.

Rpruen can mod it for bigger injectors but stopped with tuning.

So can nobody tune a b18ft engine or knows how it is done?

gvanminnen · Post by **gvanminnen** » Sun Aug 02, 2009 12:30 pm

There is also a bolt (adjusting srew) in the MAF, what can you adjust with that?

glasgowjim · Post by **glasgowjim** » Sun Aug 02, 2009 12:50 pm

do not understand what you mean "blod" ??

Is this a variable resistor you are talking about?

Sieger · Post by **Sieger** » Sun Aug 02, 2009 4:17 pm

try to make a bypass pipe that excludes the MAF, pipe needs to be 20 mm till 30 mm to get the best AFR

this was done by a guy that also tunes B18ft ecu's
The best result this guy had was just simpley make a hole in de pipe after the MAF.

gvanminnen · Post by **gvanminnen** » Sun Aug 02, 2009 8:31 pm

Oke but is that also helping with full throttle.

pol · Post by **pol** » Mon Aug 03, 2009 9:51 am

I believe they increased the volume of the maf by altering the diameter of the casing.

There was a specific volume they were aiming for to match some uprated injectors. I think they sourced some tubing of suitable diameter then took the internals of the MAF and inserted into the new tubing.

How to calculate the volume required I do not know but this is what they were doing.

Try this old link for some info:

http://volvo480.dragons.org.uk/forum/vi ... php?t=4393

Hope that helps,

pol

gvanminnen · Post by **gvanminnen** » Mon Aug 03, 2009 3:50 pm

Thanks mate

MAF need more volume so I have to take the internals of the MAF and make it in a bigger pipe.

gvanminnen · Post by **gvanminnen** » Mon Aug 03, 2009 8:02 pm

Sow that is not easy to open the MAF. You have to cut the wires to get the top open. Then there are bolts under it.

I will try it when I have a second MAF.

440tic · Post by **440tic** » Tue Aug 04, 2009 3:42 pm

i'll have 320cc/min injectors and maf changet 75mm tube, works jus't fine, also T25, richmod, eletrical boost control also etc little things. dunno hp, but more than orig

460tic

dave r5 · Post by **dave r5** » Tue Aug 04, 2009 4:06 pm

i dun the 20mm -30mm hole trick and it worked.

for a bit.

then i nuked my engine!

reevio · Post by **reevio** » Wed Dec 23, 2009 3:07 pm

to much boost dave?