[Mike.]

Originally Posted by Spitfire007

Found my problem. Turns out the DISAs are NOT connected!
No wonder I didn't feel much. The Shop missed it.
Long one and short one: which goes where now?

lol good shop

[Spitfire007]

Originally Posted by Mike.

lol good shop

They're on this forum...with a stellar rep...but anyone can make mistakes.

[Spitfire007]

UPDATE

so I had a chance to run the car hard this morning. It does seem to pull pretty well, better than stock.
Is it night and day?

No.

But it's a little torquier down low, not much, and a little more raw and quick up top.

If one downshifts to pass and lands in the 3.5-4K rpm range, you'll count a Mississippi or two before the power comes in.

Worth the whole enchilada of tune/intake/hassle? Meh. The car didn't need it, to be honest. Am I enjoying it? Sure!!

A stock 328i only needs to be driven 500 rpm higher than you're used to, and it'll scream well enough.

Thanks all!

[N52UNED]

Originally Posted by Spitfire007

UPDATE

so I had a chance to run the car hard this morning. It does seem to pull pretty well, better than stock.
Is it night and day?

No.
..... ... ...

Worth the whole enchilada of tune/intake/hassle? Meh. The car didn't need it, to be honest. Am I enjoying it? Sure!!

I think there's the difference between a manual and automatic trans. While neither are night and day; I'd say it's a must do mod for people with automatic trans looking for any real performance boost. Definitely worth the hassle (and mine did not go smooth ... either with the flash nor the 3IM install)

Honestly I'm of the mindset that those with a manual transmission can makeup for some of the differences by shifting a bit more aggressively (ie. winding out the RPM's a bit further) ... while those of us with automatic trans really can't without being in Sport mode. (but I will state the mods make the Sport mode much more sporty)

I've had my mod for a bit over a year now ... and I'm glad I did it every time I get behind the wheel.

[The Nightman]

Originally Posted by Spitfire007

UPDATE

so I had a chance to run the car hard this morning. It does seem to pull pretty well, better than stock.
Is it night and day?

No.

But it's a little torquier down low, not much, and a little more raw and quick up top.

If one downshifts to pass and lands in the 3.5-4K rpm range, you'll count a Mississippi or two before the power comes in.

Worth the whole enchilada of tune/intake/hassle? Meh. The car didn't need it, to be honest. Am I enjoying it? Sure!!

A stock 328i only needs to be driven 500 rpm higher than you're used to, and it'll scream well enough.

Thanks all!

I would still try to rule out faulty DISA valves. I didn't notice much of a difference when I first did the 3IM and 330i tune but then found out my DISA valve motors were faulty. With brand new valves the increase in performance is quite noticeable. The power delivery is very smooth so it might not "feel" like it's faster, but it's definitely there

[Spitfire007]

Originally Posted by freedomfries

I would still try to rule out faulty DISA valves. I didn't notice much of a difference when I first did the 3IM and 330i tune but then found out my DISA valve motors were faulty. With brand new valves the increase in performance is quite noticeable. The power delivery is very smooth so it might not "feel" like it's faster, but it's definitely there

My city MPG is horrible now though. Where t used to be 19, I'm barely cracking 15. This is a problem.

[Taskmaster]

I would reinstall the tune, or reset the adaptations with the pedal method.

It’s easy, it’s quick and solves a lot of issues.

[Spitfire007]

Originally Posted by Taskmaster

I would reinstall the tune, or reset the adaptations with the pedal method.

It's easy, it's quick and solves a lot of issues.

Pedal method with a 6-speed??
I thought that was for automatics.

And how does one do it anyhow?

[Taskmaster]

Originally Posted by Spitfire007

Pedal method with a 6-speed??
I thought that was for automatics.

And how does one do it anyhow?

The steps:
Push Engine button ON (once; do not start engine)
Step on the throttle pedal down (all the way down)
Hold it there for 30-40 seconds
With throttle still down, push Engine button OFF
Release throttle
Wait 2 minutes
Start car normally. Done

[Saico]

I think that after the tune the engine runs on much lower AFR, hence the lower mpg.

[hassmaschine]

the AFR is only changed at WOT. you're not going to get a drop in MPG from a tune unless you're flooring it all the time.

[atmosphericM]

Curious, does the tune also alter the "throttle tables" or something like that? So that less pedal = more throttle? Which would mean.. and I'm nitpicking here (not to be an ass lol, but honestly just so that it's clear).. that for a given pedal use, the car would use more fuel? That said, at given pedal use you would obviously be accelerating more quickly, so one would probably use less pedal to compensate and thus end up with the same MPG.

[Taskmaster]

Originally Posted by atmosphericM

Curious, does the tune also alter the "throttle tables" or something like that? So that less pedal = more throttle? Which would mean.. and I'm nitpicking here (not to be an ass lol, but honestly just so that it's clear).. that for a given pedal use, the car would use more fuel? That said, at given pedal use you would obviously be accelerating more quickly, so one would probably use less pedal to compensate and thus end up with the same MPG.

From what I know, it does not.

[Biginboca]

Originally Posted by atmosphericM

Curious, does the tune also alter the "throttle tables" or something like that? So that less pedal = more throttle? Which would mean.. and I'm nitpicking here (not to be an ass lol, but honestly just so that it's clear).. that for a given pedal use, the car would use more fuel? That said, at given pedal use you would obviously be accelerating more quickly, so one would probably use less pedal to compensate and thus end up with the same MPG.

My impression is that the BPC tune’s I have had do dial up throttle sensitivity, kind of like the sprint booster if anyone has heard of that. So what used to be a 50% Throttle press of the gas peddle is now like a 75% Throttle press.

[hassmaschine]

I don't think the pedal input is changed at all. if it is, it's certainly not from a 50% to a 75% change. There's not really a 'map' for that anyway, it's just a single value that defines the slope.

there is a throttle map that can be altered but remember that the "throttle" is open most of the time anyway. Everything is actually controlled by torque (requested, actual, monitored). You're not going to use more fuel unless you're also driving faster all the time.

[Phyrexia]

I feel like the it's a less pronounced version of the Regular / Sport modes in an E46 M3. In Sport Mode on an M3, WOT's the same but half throttle will have you accelerating faster than half throttle in normal mode.

However, the 328 has more power at WOT after the tune so it's hard to say for sure. I'm inclined to agree with Big here.

[Terraphantm]

Originally Posted by hassmaschine

I don't think the pedal input is changed at all. if it is, it's certainly not from a 50% to a 75% change. There's not really a 'map' for that anyway, it's just a single value that defines the slope.

there is a throttle map that can be altered but remember that the "throttle" is open most of the time anyway. Everything is actually controlled by torque (requested, actual, monitored). You're not going to use more fuel unless you're also driving faster all the time.

There are driver's request vs torque curves that can be altered (which is in fact what the sport button does on the cars that have them).

On the MS45 (which granted uses a traditional throttle body, but it's torque managed nonetheless), the sport curve makes a decent difference.

[Saico]

Originally Posted by hassmaschine

the AFR is only changed at WOT. you're not going to get a drop in MPG from a tune unless you're flooring it all the time.

Isn't it so that on low RPM on which the automatic transmission is usually shifting (2000 - 3000) we are utilizing all of the available torque (= WOT) ?

[rjahl]

Originally Posted by Saico

Isn't it so that on low RPM on which the automatic transmission is usually shifting (2000 - 3000) we are utilizing all of the available torque (= WOT) ?

No, the automatic will not let you operate at full load at such a low rpm.

Automatic shift maps are based on pedal position and output shaft rpm. None of these will let you hit WOT or full load at low RPMs.

[Spitfire007]

I've done the throttle reset and reinstall and I'm only getting 15mpg where is usually get 19.
I have been doing the same drive for 8 years jn the same conditions year round.

Something is amiss. Car drives well, just the fuel burn is high.

Car is in top mechanical shape. No CELs, no leaks, no issues, no weird idle...I have no idea. But with 15 mpg I might as well get a Chevy SS...

Car is STOCK apart from 3stage IM, carbon filter delete and tune. Reached out to Bob at BPC last week and no response yet.u

[Noir]

Originally Posted by Spitfire007

I've done the throttle reset and reinstall and I'm only getting 15mpg where is usually get 19.
I have been doing the same drive for 8 years jn the same conditions year round.

Something is amiss. Car drives well, just the fuel burn is high.

Car is in top mechanical shape. No CELs, no leaks, no issues, no weird idle...I have no idea. But with 15 mpg I might as well get a Chevy SS...

Car is STOCK apart from 3stage IM, carbon filter delete and tune. Reached out to Bob at BPC last week and no response yet.u

I'd hit Randall or the other SA up.. usually very good about responding
Bob has lots to do, I'm sure. Randall can get answers from him for you.

[hassmaschine]

Seriously doubt its tune related. I still get 35mpg on the highway and i started tuning mine 4 years ago. Long term average (i do a lot of 20mph city driving) is still 23-24.