[Simpson196]

Im a bit of a noob at these things.... well a lot of a noob!

Is the DTUK kit like a mini remap? so what I mean by that is, remap will get you most gains but DTUK is cheaper?

Also can you have both a DTUK kit and then remap it?

[P14kle]

Just thought id post an update with my 150k+ mile 320d.

Basic spec is as follows...

E91 320d M47n2
Decat pipe
K+N filter
EGR delete pipe and mapped out
Inlet manifold cleaned out and de-flapped
Re-map (previous owner)
Tuning Diesels Digibooster box
Tuning Diesels Synergy 1 box

Recently sent the Synergy 1 box back to Ron at Tuning Diesels, and he added the most aggresive map files to the box that he could. To maximise this, my thoughts turned to addimg a slightly larger intercooler to try and combat the smoke produced when running at max settings on the Synergy.

Today I fitted the intercooler from an lci 325d to my car.

The inlet is bigger so you need to address this issue. I used a boost hose from the 330d on the inlet, and reused the current hose from the outlet to egr as its the same. (If you go for the 330d intercooler then BOTH hoses will need to be changed.)

Standard 320d intercooler is part number 3093796
and has 62mm inlet and outlet

325d intercooler is part number 3296399 and has 70mm inlet and 62mm outlet.

330d and 335d ics have both 70mm inlet and outlet.

I used the red quick connect hose from the 330 and used a piece of rubber hose that was 52mm inside diameter to clamp the red hose down onto using a mikalor clamp.

Pics as follows..











First impressions are that the car definitely has abit more ooomph from the more aggressive mapping on the Synergy 1 box, and I think the intercooler is helping to reduce the black smoke from car when driving hard.

Running about 26psi max now on the stock Mitsubishi turbo so a few more than stock but safe enough for me not to be worried about it.

Would definitely recommend Ron at Tuning Diesels as his customer service has been excellent, always answers my emails and silly questions without fail.

No RR figures im afraid, so all gains are detected by my arse dyno!! 😁

(Ps... I have had an e60 530d before so know how the 6 pots go, but this car really does go very well in comparison now!)

[Dyeo1]

A free little mod to help the engine breath. After removing air box on my car I found that the drivers side inlet from the grill is blocked as standard. Nothing a drill can’t sort👍

[P14kle]

Originally Posted by Dyeo1

A free little mod to help the engine breath. After removing air box on my car I found that the drivers side inlet from the grill is blocked as standard. Nothing a drill can’t sort👍

Nice work. Just done mine, never noticed that before!!

Does make me chuckle when you see 320d's with the grille scoop things fitted behind. Even more so now, when you realise one of them is probably doing nothing at all!

[McPikie]

I've never even noticed that. Will be whipping that off this weekend to open up.

[borinous]

going to be checking mine now as well

[rasa bmw]

dervs don not benefit from cais/group A/airbox mods,they zre spo efficient they just do not need them..they love to run hot..petrol just the opposite..they need extra intercoolers and a decent air flow.

[borinous]

Originally Posted by rasa bmw

dervs don not benefit from cais/group A/airbox mods,they zre spo efficient they just do not need them..they love to run hot..petrol just the opposite..they need extra intercoolers and a decent air flow.

true but its not a cooling thing. problem i have with mine since mapping is more fuel tends to equal more unbrunt Diesel coming out the back so the more air you can get in the better

[McPikie]

Originally Posted by borinous

true but its not a cooling thing. problem i have with mine since mapping is more fuel tends to equal more unbrunt Diesel coming out the back so the more air you can get in the better

This. Whilst diesels like to run hot, it's a fine balance. Last thing you want to be doing is lobbing soot out the back when you can condense more air into the mixture, getting more bang for your buck.

[rasa bmw]

Originally Posted by borinous

true but its not a cooling thing. problem i have with mine since mapping is more fuel tends to equal more unbrunt Diesel coming out the back so the more air you can get in the better

if its been mapped correctly, and your car is healthy,then the smoke shouldnt be any more than a standard car..the maf sensor controls the amount of fuel put in when it measures how much air is getting put in via your right foot.

[Jfdy10]

Is there much point in installing an upgraded K&N air filter? Mines is due service soon so might as well do it when I'm doing the service if it's worth it. Defo checking out the drivers side inlet tomorrow as well if it's blocked off

[P14kle]

Dont think there is much 'point' in fitting the filter, but I did as it was kept back from my pervious car, so thought I may aswell. Makes a slightly diff sound but I bet it doesnt make anymore horsepower etc.. With my car I feel its a combination of lots of little mods that add up to the increased performance over stock.

Its addictive to me, would hate to have a brand new car as I love to 'tinker' with my cars. Its a hobby. 😎

[rasa bmw]

nope,,a paper filter is way better at filtering,i posted a very good explanation to this a few weeks ago for someone who questioned me about facts of this.a foam filter is a little better at air flow,,but as has just been said..air flow is ample with standard air box.unless going silly silly power with new injectors/ic/turbo etc etc

[rasa bmw]

Originally Posted by P14kle

Dont think there is much 'point' in fitting the filter, but I did as it was kept back from my pervious car, so thought I may aswell. Makes a slightly diff sound but I bet it doesnt make anymore horsepower etc.. With my car I feel its a combination of lots of little mods that add up to the increased performance over stock.

Its addictive to me, would hate to have a brand new car as I love to 'tinker' with my cars. Its a hobby. 😎

yup,,tuning/modding is addictive,,its way better to mod/tune a little at a time,it keeps you interested in the car,,

[chrissyw]

Originally Posted by rasa bmw

if its been mapped correctly, and your car is healthy,then the smoke shouldnt be any more than a standard car..the maf sensor controls the amount of fuel put in when it measures how much air is getting put in via your right foot.

Pretty much every mapped non DPF'd diesel I've seen has smoked a bit more than standard.


I've never really understood spending money on a x20d when the M/N57 is light years ahead of the M/N47.

[rasa bmw]

Originally Posted by chrissyw

Pretty much every mapped non DPF'd diesel I've seen has smoked a bit more than standard.


I've never really understood spending money on a x20d when the M/N57 is light years ahead of the M/N47.

yeh it will with dpf removed..and yeh the m57 is awesome in comparison,,i did have a 320d engined car a while ago(mg zt cdti) although they were detuned by bmw so not to compete with there 3 series,even though they also owned rover/mg..it was 130 bhp..but a nice 160 bhp remap by a guy who developed the map with a T4 diagnostic machine...i loved them cars,id still have one today if they had a 3.0d engine in them..

[rasa bmw]

[QUOTE=chrissyw;22371617]Pretty much every mapped non DPF'd diesel I've seen has smoked a bit more than standard.


I've never really understood spending money on a x20d when the M/N57 is light years ahead of the M/N47.[/QUO

[xsmogx]

Hey guys, any update or long term observation after the m47 tuning? Cheers

[P14kle]

Still going strong at 157k now.

[McPikie]

Bumping this thread. I sold my E91 a couple of years back now and had a 3.2 TT for a while, but a change of address meant I would be car sharing with 2 girls from work. The TT was therefore sold and replaced with this number



another M47 powered BMW. It's on 209k with one previous owner and full service history. Yes, the back arches are rotten, and yes the alcantara seat bolster is torn, but it's had a recon box less than 2 years ago and in August 2019 had a new clutch and flywheel put in. I got it for CHEAP off a friend and was just going to run it for a couple of months whilst I find a nice 330d coupe, but finding one in the spec I want has become a chore, so I think I am going to spend a couple of pennies on this instead and preventative upgrades.

I was thinking of taking out the swirl flaps to start with but also considering maybe upgrading a few bits whilst it's apart. It's bone stock at the moment, so 150bhp. Ordered an inlet which is already blanked off eBay for £10. I want to clean that out while I have the chance. Did I read somewhere to use acid?

I don't want to go wild, and I am not looking for mega power, but I think the turbo may be on its last legs as it does smoke a bit under load, but it seems to be a mix of blue and black, it's not just unburnt fuel. I am wondering whether a hyrbid may be worth looking at if I am swapping it out? I assume it's a vac actuator being a 2003.

Plans so far:

Full service
4 x Fresh glow plugs
Swirl flap delete (done on spare inlet)
EGR delete (although this brings on EML?) or maybe just a clean/overhaul
Refurbished turbo/Hybrid?
May as well do a decat whilst I am there
Chipbox over a remap.

As said, this is a run around but I need it as a daily for work and I need it to be reliable as I car share with people from work. So I don't mind spending money on preventative care, but may as well upgrade bits whilst I am there.

Also need to get a smooth running test done and check the thermostats this week.

[therealdb1]

At least the front wings don't look rotten which is unusual for one of those with that mileage!
Unfortunate siting of the gate post makes it look like you have a mega shark fin on the roof!

[chrissyw]

My 163bhp E90 320d is running at 207bhp / 430nm

EGR delete
Swirl flaps blanked
P-Torque remap

It's had a new MAP and MAF sensor.

It's nippy, can stick with Focus ST 225's etc. Definitely quicker than my old Clio 182 rolling. Not sure there would be anything in it off the lights.

I gave up going down the hybrid route, for the money, you're better off ditching the 4 cylinder and going with a 330d.

Bigger intercooler you need a map really to take advantage of the increased air.

A lot in the past have gone down the Alpine D3 route going with 330d injectors, a bigger intercooler and a hybrid or Garrett turbo.

That would push you to 230/240bhp but it would eat a worn clutch quite quickly.

I had my car mapped at 88k. The clutch was dead by 110k. On 170k now.