[My535i]

First off, this is my first post soo...hello everyone.

I have been trying to get information regarding the possiblity of upgrading my '08 535i with steptronic trans to either the V2, SSTT, or JB...I have had a hard time finding much information on 535's with this type of upgrade even at the Vishnu website. Looks like they only have a Stage 0 for 535 but stage 0, stage 1, stage 2 for 335. Why can't I use Stage 1 V2 on 535i? I thought the engines were the same as 335?

I see many of you guys on here with awesome results just wondering if I can do the same with my big 'ol 5 series

Thanks in advance for any input!

[Mr. 5]

I would say that it's going to give you the same results as the 335.
I haven't dynod the V2 yet but these dynos will help you make your decision.

http://www.e90post.com/forums/showth...8916&highlight

[e90AW335i]

Stage 1 on the 335i involves the Vishnu/Harman exhaust system which would not fit the 535. That is the reason for that.

As far as the tunes are concerned I know the Vishnu and JB will work on the 535 and have had some good results.

There is another member on here, 1bad535, who has the JB product and has had very good success with it.

[My535i]

Thanks for the replies guys. Very much appreciated.

Mr.5...thank you for the link. Your results are impressive and that gives me tons of info.

kyleh...If I am not mistaken many of you guys are running V2 with completely stock exhaust correct? and still getting great results?

Would I be able to run V2 @ 14psi or so with EVERYTHING else stock? (I will add a drop in K&N too)

[e90AW335i]

Originally Posted by My535i

Thanks for the replies guys. Very much appreciated.

Mr.5...thank you for the link. Your results are impressive and that gives me tons of info.

kyleh...If I am not mistaken many of you guys are running V2 with completely stock exhaust correct? and still getting great results?

Would I be able to run V2 @ 14psi or so with all else stock?

I personally dont run any of the tunes...YET, but yes you can run V2 up to 15psi with everything else stock.

[My535i]

Ok, very cool. I guess I was just confused by the Vishnu website and the fact that it only shows stage 0 for the 535. I was not sure if the only difference was exhaust.

I Think I might just have a custom mandrel bent cat-back exhaust made for the car. How much of a gain is typical for V2 with a catback over stock catback?

[Driver72]

Another point, the 535i engine is not "exactly" the same as the 335i.
There are quite a few differences you can see by just popping the hood of a 535i and 335i side by side.
In dyno testing the 535i seems to make a bit less power than the 335i does, both stock and tuned.
As Kyle said 1bad535i has a JB2R (or maybe he's running JB2HR), exhaust, BOV and a few other little mods and he seems to make 15-20 rwhp less than 335i's with the same mods.

I'm guessing the 535i's ECU is a bit more conservative in many ways.
It still makes the claimed 300 hp from the factory, but most speculate the 335i really makes more (10-15 hp more) than that.

I would also think maybe they put tighter limits on the 535i's ECU when it comes to tuning.
The 535i is more of a luxury cruiser, where the 335i is more of a sport sedan/coupe.

Either way, you'll get power increases from using a piggyback on the ECU

I'm not sure if Vishnu has tuned the PROcede v2 for the 535i yet, I know they have a v1 for it though.

[My535i]

hmm, could this difference not just be different dynos/different conditions? Has anyone done back to back dynos for similar tuned 535 vs 335? I was under the impression that the stock engine and engine software of these was the same?

Originally Posted by Driver72

Another point, the 535i engine is not "exactly" the same as the 335i.
There are quite a few differences you can see by just popping the hood of a 535i and 335i side by side.
In dyno testing the 535i seems to make a bit less power than the 335i does, both stock and tuned.
As Kyle said 1bad535i has a JB2R (or maybe he's running JB2HR), exhaust, BOV and a few other little mods and he seems to make 15-20 rwhp less than 335i's with the same mods.

I'm guessing the 535i's ECU is a bit more conservative in many ways.
It still makes the claimed 300 hp from the factory, but most speculate the 335i really makes more (10-15 hp more) than that.

I would also think maybe they put tighter limits on the 535i's ECU when it comes to tuning.
The 535i is more of a luxury cruiser, where the 335i is more of a sport sedan/coupe.

Either way, you'll get power increases from using a piggyback on the ECU

I'm not sure if Vishnu has tuned the PROcede v2 for the 535i yet, I know they have a v1 for it though.

[Mr. 5]

I'm wondering if this has to do with the different exhaust setup that the 535 has plus the different drivetrain. The engines should be the same.

Originally Posted by Driver72

Another point, the 535i engine is not "exactly" the same as the 335i.
There are quite a few differences you can see by just popping the hood of a 535i and 335i side by side.
In dyno testing the 535i seems to make a bit less power than the 335i does, both stock and tuned.
As Kyle said 1bad535i has a JB2R (or maybe he's running JB2HR), exhaust, BOV and a few other little mods and he seems to make 15-20 rwhp less than 335i's with the same mods.

I'm guessing the 535i's ECU is a bit more conservative in many ways.
It still makes the claimed 300 hp from the factory, but most speculate the 335i really makes more (10-15 hp more) than that.

I would also think maybe they put tighter limits on the 535i's ECU when it comes to tuning.
The 535i is more of a luxury cruiser, where the 335i is more of a sport sedan/coupe.

Either way, you'll get power increases from using a piggyback on the ECU

I'm not sure if Vishnu has tuned the PROcede v2 for the 535i yet, I know they have a v1 for it though.

[Driver72]

Originally Posted by My535i

hmm, could this difference not just be different dynos/different conditions? Has anyone done back to back dynos for similar tuned 535 vs 335? I was under the impression that the stock engine and engine software of these was the same?

No, the ECU is different.
Ask Shiv, you can't just take a 335i PROcede and stick it on a 535i.
They have different software tunes and programs from the factory.

Many, including myself, have said too that part of the deal may in fact be a more restrictive exhaust system.
The longer drivetrain may be part of it too.

As for the Dynos.

I was their (in fact I was the one driving) 1Bad535i's car when we dynoed it.
Same dyno as I've run on, same dyno we've done Terry's 335i on, same dyno we've done others on.

The 535i just dynos less (I think it was about 4-5 rwhp less when stock compared to most 335i's) and 1BAD535i seemed to dyno about 20+ rwhp less than what Terry did with the same mods.

And again, the engines are different. I don't remember every point, but when I popped 1BAD535i's hood I was surprised at many changes.
IIRC the air intake box wasn't even in the same spot.
There are several differences.

[e90AW335i]

Downpipes are different as well....

[Driver72]

Originally Posted by kyleh4852

Downpipes are different as well....

Yeah, again, I was surprised by how many difference there are from just looking at the two engines.
When i looked at the 135i's engine at it's North American debut on the 1st press day of the LA Auto show, it's engine looked exactly like the 335i's however. But I'm sure it's DP's are different too, as of course it's exhaust is since the 135i (and the 535i) is not a true dual exhaust like the 335i's is.

[e90AW335i]

Originally Posted by Driver72

Yeah, again, I was surprised by how many difference there are from just looking at the two engines.
When i looked at the 135i's engine at it's North American debut on the 1st press day of the LA Auto show, it's engine looked exactly like the 335i's however. But I'm sure it's DP's are different too, as of course it's exhaust is since the 135i is not a true dual exhaust like the 335i's is.

So can a JB go right onto a 535i or do some things need to be changed with that as well?

[Driver72]

Originally Posted by kyleh4852

So can a JB go right onto a 535i or do some things need to be changed with that as well?

I'm not sure, you'd have to ask Terry.
The JB2 basically tricks the ECU into believing their are higher Air Intake Temps and adds more boost then lets the stock ECU make the adjustments needed in fuel and timing. This is the reason the JB2 can't run as much boost on 91 or 93 Octane as the PROcede can because the JB2 uses up more of the stock ECU's ability to adapt to higher temps, higher altitude, and lower octane fuel.
But because of that, it might not need a different tune (aka "a different JB2") than the 335i uses.
But again, you'd have to ask Terry to see if any changes were needed.
The PIN configuration is probably different, but I don't know if the actual tune is.

[e90AW335i]

Originally Posted by Driver72

I'm not sure, you'd have to ask Terry.
The JB2 basically tricks the ECU into believing their are higher Air Intake Temps and adds more boost then lets the stock ECU make the adjustments needed in fuel and timing. This is the reason the JB2 can't run as much boost on 91 or 93 Octane as the PROcede can because the JB2 uses up more of the stock ECU's ability to adapt to higher temps, higher altitude, and lower octane fuel.
But because of that, it might not need a different tune (aka "a different JB2") than the 335i uses.
But again, you'd have to ask Terry to see if any changes were needed.
The PIN configuration is probably different, but I don't know if the actual tune is.

Yeah, I will ask him if I get really curious, but I was just seeing if you knew off hand since we were on the topic. Thanks...

[My535i]

Good stuff guys.

Sounds like i need to do a bit more research. So, is there a V2 program for 535i? I tried contacting vishnu a couple days ago but still have not gotten a response.

[e90AW335i]

Originally Posted by My535i

Good stuff guys.

Sounds like i need to do a bit more research. So, is there a V2 program for 535i? I tried contacting vishnu a couple days ago but still have not gotten a response.

http://www.vishnutuning.com/bmw_535_zero.htm

It says V2 on their web page so it must be compatible...

G/L and keep us updated....

[My535i]

I just checked my inbox and vishnu replied to me just a few moments ago!! He says that I can use Procede on the 535i. I just want to confirm now if he means V2. In my email I specifically asked about V2.

My question:


Subject: PROcede V2 on 535i???
"> Hi,
>
> I own a 2008 535i and I am very insterested in
> uprading to PROcede. I notice on your website that
> only Stage 0 is available for 535i. I have a custom
> cat back exhaust on my 535i as well as k&n drop in air
> filter. Do your latest software/hardware updates work
> on the 535i or only on 335i??
>
> Thanks for any help.
"

His reply:

Hi
The PROcede works with the 535i. The 535i becomes a much better car
with the PROcede installed but we do not sell an exhaust for your car.

Since you already have an exhaust, you can have a fantastic car with

just an ECU upgrade for only $1295.

Regards,
Team Vishnu

[e90AW335i]

Yeah, stage 0 is the V2 now...

Congrats bro. Keep us updated on what you decide to do. Also, if you want to see how much performance really increases do a baseline dyno with what you have now and then do another after you get the PROcede on that same dyno.

G/L

[My535i]

Based on this, it seems that the motor itself is the same and is being run by the same software. Obviously there are some changes in exhaust etc...from 335 to 535 which would likely change the final HP/TQ numbers but the overall gain should be the same (if the 535 starts at slightly less it will still be slightly less but increase should be more or less the same).

[e90AW335i]

Originally Posted by My535i

Based on this, it seems that the motor itself is the same and is being run by the same software. Obviously there are some changes in exhaust etc...from 335 to 535 which would likely change the final HP/TQ numbers but the overall gain should be the same (if the 535 starts at slightly less it will still be slightly less but increase should be more or less the same).

Makes sense to me. Go and get a baseline run in soon and see what you are at right now.

[My535i]

Will do kyle.

Thanks again for all the input guys

One more question...regarding the transmissions on 335 vs 535. Anyone know how similar/different they are?

Thanks