[SO8]

MY LCI E92 330d was remapped to 302bhp by DMS.

I now own a Z4 35iS which as standard is 335bhp.

Both are obviously very different but what are people's views on the outcome if they went up a runway or the like side by side ?

The 330d as standard was 6.1 to 62 before remap. The 35iS is 4.8 to 62 and not remapped.

I am guessing the 330d may surprise the Z4 a bit but after 60 would lose.

The 35iS is very quick but the 330d when remapped was like a catapult being let go !

Now, should I remap the 35iS DMS say it will go to 400-410bhp as it has different bits on it to a standard 35i.

[Josh1a1h]

Are you really asking this question?

GET IT MAPPED ASAP!

Trust me, it will feel like a whole new car!!!
Forget you little diesel once your mapped.

By the way, would love to see some pics of the z4!

[djgandy]

the Z4 will win every time. It has more power and less weight and a dct box. It's not even a contest.

[idnan]

Feeling fast doesn't always mean fast. That big slug of torque will make the 330d feel much quicker but in reality the flatter power curve, less weight and the quick shifting 35is will be just as quick if not quicker.

BTW I'm 99% sure if yours is an n54 then there is no difference between the 35is and a 'normal' 1/3 series.

[Ajs_435d]

You need a stage 2 335d lol.

[SO8]

Originally Posted by idnan

Feeling fast doesn't always mean fast. That big slug of torque will make the 330d feel much quicker but in reality the flatter power curve, less weight and the quick shifting 35is will be just as quick if not quicker.

BTW I'm 99% sure if yours is an n54 then there is no difference between the 35is and a 'normal' 1/3 series.

The 35i is 306ps (same as older 135i and 335i)
The 35iS is 340ps (same engine as the 1M)

[djgandy]

Originally Posted by SO8

The 35i is 306ps (same as older 135i and 335i)
The 35iS is 340ps (same engine as the 1M)

Some newer z435is' are N55 though. I think that was idnan's point.

[idnan]

Originally Posted by SO8

The 35i is 306ps (same as older 135i and 335i)
The 35iS is 340ps (same engine as the 1M)

There was no difference between the 1m engine and the 335i engine except a different map and a different flywheel IIRC.

What I mean is hardware wise there is no real difference to the engines to allow them to run more power:

http://www.1addicts.com/forums/showthread.php?t=602194

[SO8]

Originally Posted by idnan

There was no difference between the 1m engine and the 335i engine except a different map and a different flywheel IIRC.

What I mean is hardware wise there is no real difference to the engines to allow them to run more power.

Ah, yes, agreed. It is a map in the main but the 35iS and the 1M have different breathing and a sports exhaust, thus DMS can map it higher than a normal 335i.

http://www.dmsautomotive.com/perform...a.php?make=bmw

[idnan]

Originally Posted by SO8

Ah, yes, agreed. It is a map in the main but the 35iS and the 1M have different breathing and a sports exhaust, thus DMS can map it higher than a normal 335i.

Read the thread I posted, there is no difference between the two. Airbox is the same and catback, the exhaust makes little to no difference at them power levels (+/- 5-10bhp if that)

[idnan]

Originally Posted by SO8

Ah, yes, agreed. It is a map in the main but the 35iS and the 1M have different breathing and a sports exhaust, thus DMS can map it higher than a normal 335i.

http://www.dmsautomotive.com/perform...a.php?make=bmw

Can't disagree as it is in black and white there but as far as the hardware is concerned, it is exactly the same

[SO8]

Originally Posted by idnan

Can't disagree as it is in black and white there but as far as the hardware is concerned, it is exactly the same

Well, BMW when they introduced it said it had better breathing, a sports exhaust (+10Db as a result) and a remap compared to the 35i + DMS confirm this.

It doesn't feel much quicker than a std 35i except at higher revs.

[idnan]

Originally Posted by SO8

Well, BMW when they introduced it said it had better breathing, a sports exhaust (+10Db as a result) and a remap compared to the 35i + DMS confirm this.

It doesn't feel much quicker than a std 35i except at higher revs.

So 30bhp extra from a remap comes from a better intake (same air filter mind you) and a 10db louder cat back exhaust?

Should feel a bit quicker due to 12-13psi in the midrange vs 8psi but I assume the boost taper will be similar to protect the turbos so that's why they would be similar at higher revs.

[gangzoom]

Doesn't the 1M come with an additional aux radiator for extra cooling?

[idnan]

Originally Posted by gangzoom

Doesn't the 1M come with an additional aux radiator for extra cooling?

That and/or a bigger fan I think

[SO8]

Originally Posted by idnan

So 30bhp extra from a remap comes from a better intake (same air filter mind you) and a 10db louder cat back exhaust?

Should feel a bit quicker due to 12-13psi in the midrange vs 8psi but I assume the boost taper will be similar to protect the turbos so that's why they would be similar at higher revs.

I guess 99% of the extra power BMW give over the 35i is down the remap and not anything else but presume when DMS up the power again it helps them more than a std 335i thus their higher figures.

[zltm089]

410bhp with just a remap on an n54 engine???...bit optimistic...

i think it's just the same engine as the 35i but with maybe a few "cooling" tubes/ vents/ air ducts etc... like the m performance pack....

[zltm089]

Going back to the OP- I think a remapped z4 35is will leave a remapped 330D on a straight.

Maybe coming out of corners, the extra torque from the D will help. But on a straight, no chance!

[idnan]

Originally Posted by SO8

I guess 99% of the extra power BMW give over the 35i is down the remap and not anything else but presume when DMS up the power again it helps them more than a std 335i thus their higher figures.

Sounds like that is the case but one thing to note is that the tuners in the USA are far more advanced than the ones here and are extracting far more power.

BTW, what colour is you z4? I really like them!

[djgandy]

Originally Posted by zltm089

Going back to the OP- I think a remapped z4 35is will leave a remapped 330D on a straight.

Maybe coming out of corners, the extra torque from the D will help. But on a straight, no chance!

The D doesn't have extra torque once gearing is compensated for. Once you are in gear and up the revs diesels have less torque to the wheels. Torque is just good when you are trying to cruise effortlessly and don't want screaming RPMs.

[SO8]

Originally Posted by idnan

BTW, what colour is you z4? I really like them!

Black ... looks like the Batmobile !

[Marshall878]

....ahhhhh.....but what will sound better.....