[jjw2331]

I'm reading a lot of good reviews about the PBX and is thinking about getting it. However, I currently have the LET tune in my 328i e92. Has anyone tried both? If so, do they prefer one over the other?

Would there be any problems if I run both the LET tune and the PBX?

[Andrew@ET]

I have the same problem if you install a pbx over a let it will possibly just cancel out your let tune meaning you wasted money.

I believe the pbx has more features so it would be better for me, with that said i would flash your ecu back to stock before adding a pbx and take your loss.

[Delta0311]

Personaly, I think the PBX is a MUST have mod for anyone who is serious about modding a 328. I had it since Sunday (running Map 3) and I could not live without it at this point. My intake and exhaust definetly help out but the PBX is like the main piece of the puzzle.

[mike-y]

they wouldn't exactly cancel each other out, but since they both increase fuel, you would run way too rich with both tunes which would hurt performance (pbx just increases whatever the computer is doing by a certain percent).

But you could run the pbx with the throttle map only (map 4, 5, or 6), and leave your LET tune as is. And I think the throttle mapping does more for the "feel" of the car than the actual tune does.

[Mike@N54Tuning.com]

Originally Posted by Delta0311

Personaly, I think the PBX is a MUST have mod for anyone who is serious about modding a 328. I had it since Sunday (running Map 3) and I could not live without it at this point. My intake and exhaust definetly help out but the PBX is like the main piece of the puzzle.

That is basically the response from all my customers

Originally Posted by mike-y

they wouldn't exactly cancel each other out, but since they both increase fuel, you would run way too rich with both tunes which would hurt performance (pbx just increases whatever the computer is doing by a certain percent).

But you could run the pbx with the throttle map only (map 4, 5, or 6), and leave your LET tune as is. And I think the throttle mapping does more for the "feel" of the car than the actual tune does.

You are right they will not cancel each-other out, but be additive. How they will react together is an unknown right now. I have a local customer who is going to install the PBX over a flash (not LET) so I will report how that goes. At worst, like you mentioned you would disengage the tune and just run the throttle remap and leave the performance gains to the flash or revert back to the stock program and just run the PBX.

Mike

[jjw2331]

Originally Posted by Mike@N54Tuning.com

That is basically the response from all my customers



You are right they will not cancel each-other out, but be additive. How they will react together is an unknown right now. I have a local customer who is going to install the PBX over a flash (not LET) so I will report how that goes. At worst, like you mentioned you would disengage the tune and just run the throttle remap and leave the performance gains to the flash or revert back to the stock program and just run the PBX.

Mike

Cool, please let us know..

Is there a significant gain felt with Map 3 (tune) compared to Map 6 with (no tune)?

I'm not talking about throwing your head back gain, but something that can be felt night and day.

Sometimes I feel that my LET tune has disappeared. For some reason, it doesn't feel like it did the first month or so with the tune...

Maybe its all in my head. Sounds like I need to go on a dyno.

[IB6UB9ok]

Hi Mike,

Thats right, I'll be coming to see you about the PBX once I get the ECU flash. Unfortunately, as I was telling you, I'm still not back in TO...won't be till around the end of the month...so please keep 1 for me.

I'll contact you the minute I get back to TO.

Talk to you soon.

[Andrew@ET]

I would not run with both unless of course you just use the throttle maps. Both tunes together would be extremely lean if indeed they do double up.. I look forward to your customers a/f reading Mike.

[Robben@ltbmw]

Originally Posted by jjw2331

Cool, please let us know..

Is there a significant gain felt with Map 3 (tune) compared to Map 6 with (no tune)?

I'm not talking about throwing your head back gain, but something that can be felt night and day.

same question, i was wondering if there's a big difference with map 3 and map 6? I believe it feels the same but map 3 consume more gas while map 6 doesn't. not sure if my info is correct though...

[vachss]

Originally Posted by cbbplanet

same question, i was wondering if there's a big difference with map 3 and map 6? I believe it feels the same but map 3 consume more gas while map 6 doesn't. not sure if my info is correct though...

Could it be that richening the mixture just burns more gas without changing the hp.... naaah.

[E93SC]

Sounds like BPX is the way to go for 328i. How is the installation? Is it easy to do? Is there a DIY?

[Mike@N54Tuning.com]

Originally Posted by E93SC

Sounds like BPX is the way to go for 328i. How is the installation? Is it easy to do? Is there a DIY?

Yes there is a DIY and definitely something that can be done at home!

http://www.n54tuning.com/pictures/powerbox.pdf

Mike

[Juan.sidarta]

Originally Posted by vachss

Could it be that richening the mixture just burns more gas without changing the hp.... naaah.

So, how much Hp does it add again?

[ghosthi32]

Originally Posted by Juan.sidarta

So, how much Hp does it add again?

[Mike@N54Tuning.com]

Originally Posted by Juan.sidarta

So, how much Hp does it add again?

10-12 hp/tq for the PBX and a remapped throttle

Mike

[Gavin@MMW]

Originally Posted by Mike@N54Tuning.com

10-12 hp/tq for the PBX and a remapped throttle

Mike

On a stock car. 91 octane

A modded car would see better and more efficient results.

[Mike@N54Tuning.com]

Originally Posted by Craven 328

On a stock car. 91 octane

A modded car would see better and more efficient results.

Yup.. The numbers I posted are on stock car, but when combined with an intake and exhaust the numbers will be higher

Mike