E82 135i "build" by JD

[JB4-335]

Congrats JD. That is extremely impressive.
Weather is ideal at the moment.
Now get out there and drive that baby!!

[Orlin]

Sweet numbers JD, congrats. As I suspected removal of the secondary cats in the mid pipes would show little to no gains however its testing like this that really does help by turning speculation into hard evidence. Thanks again for taking the time to step this all out for the purpose of education

[Kiwi Peter]

Hi there JD
Hows the car, is 300 killer wasps enough or do you still want more.

[Orlin]

Originally Posted by skycat

Hi there JD
Hows the car, is 300 killer wasps enough or do you still want more.

I dont think he could get much more out of it without upgrading the turbos.

[BMW86]

Far out JD.. I'm very impressed with your build and getting the big 300.

I'm a bit confused why you made less power with the downpipe back exhaust.. You said the car was running leaner with only the donwpipes.. so what settings are you running on the Procede, i'm not very familiar with how it works.

Have fun testing it on the roads... any plans to hit the drags?

[1q2w3e4r]

Originally Posted by skycat

Hi there JD
Hows the car, is 300 killer wasps enough or do you still want more.

Hey Pete how's things mate? Called Saturday as i was going to pop in as I was down the road. Didn't hear from Kenny till it was too late.

Met a Kiwi guy with an R35 who runs at Bathurst who might give you a call to sort his exhaust out

[Kiwi Peter]

Hi Ben
Time you called by for a chat, hey when are you going to get your 135. I must say i am growing to like these cars, so much so i have been looking for a left hook US car. Nice to see Justins car is working well

[MrBlonde]

That's it Peter, Benny needs to unload all those Porsches and get himself a 135!

[adrian@vishnu]

Nice results Justin!!

I am not surprised that there was little (no) power gain in the mid and rear exhaust sections. It is well documented that the stock exhaust is pretty good, and you are not the first to test upgrading it, and find little benefit. As for the power reduction... I doubt it is actually making less power. As you can see it pretty much matches the curve until high RPM, and a variation of less than 10kW is within the repeatablility of the dyno... particularly if the car has been restrapped. It is normally at the top end that you will see the most power change due to strap tension, as the torque is dropping off, and it is the torque that pushes the car higher on the rollers.

Your car seems to make very good power, and we are certainly struggling for fuel. We may want to consider increasing the meth ratio to less water and more meth. This would improve the AFRs. They are not terrible, but it would certainly be better to see them around 12.5 for most of the run.

Cheers,

Adrian

[Unkie]

That's fantastic Jus! Some fantastic numbers, and more the point, fantastic area under the power curve!
That graph just screams daily drivability

Thanks for the details, certainly will help a number of other owners decide on mod choices with an informed expectation of power gain

[JD75]

Originally Posted by mattyv

Nicely done, JD. Enjoy the "testing" this weekend

Cheers mate, I will or should I say I did.

Originally Posted by JB4135

Congrats JD. That is extremely impressive.
Weather is ideal at the moment.
Now get out there and drive that baby!!

Thanks dude.

Yep, I did just that on Sunday.

It was a fantastic day for a long drive and clocked up quite a few kilometres, prior to some "spirited" driving, during the early hours of Monday morning.

Originally Posted by Orlin

Sweet numbers JD, congrats. As I suspected removal of the secondary cats in the mid pipes would show little to no gains however its testing like this that really does help by turning speculation into hard evidence. Thanks again for taking the time to step this all out for the purpose of education

Thank you, I have very much enjoyed the build process thus far.

I must admit I did expect to pick up some horses, following the deletion of the midpipe cats.

I wonder if the increased flow that comes from the decrease in back pressure, may be more relevant as power is increased significantly beyond 300 rwkw, via "upped" RB turbos.

[BMW86]

Originally Posted by JD75

I wonder if the increased flow that comes from the decrease in back pressure, may be more relevant as power is increased significantly beyond 300 rwkw, via "upped" RB turbos.

I bet it sounds intoxicating anyway!

[JD75]

Originally Posted by skycat

Hi there JD
Hows the car, is 300 killer wasps enough or do you still want more.

Hey Pete, the car is a torque monster.

It's so very tractable when in 4th or 5th gear, from as little as 2,000 RPM.

When at WOT the engine is pulling very hard at the top of third, grab fourth and the surge of torque is significant to say the least.

Is 300 enough...

In the short term yes, in the long time I imagine no, haha.

Originally Posted by Orlin

I dont think he could get much more out of it without upgrading the turbos.

Yep, I tend to agree.

Ummm, I suspect two of these will help the cause somewhat.

[JD75]

Originally Posted by BMW86

Far out JD.. I'm very impressed with your build and getting the big 300.

I'm a bit confused why you made less power with the downpipe back exhaust.. You said the car was running leaner with only the donwpipes.. so what settings are you running on the Procede, i'm not very familiar with how it works.

Have fun testing it on the roads... any plans to hit the drags?

Thanks mate, I appreciate the kind words.

I wasn't suggesting the car made less power, as a result of the downpipe back exhaust.

I had suspected that the safer AFR's following the increase in Meth flow, resulted in a small power loss.

However if you read Adrian's post above, he describes the reduction in power as an acceptable variance, most likely as a result of a small difference between tie down tension.

It makes sense, we are talking about a 6 rwkw difference on a vehicle that is making in excess of 300 rwkw, as a % that is f... all.

Fun was had, no plans to hit the drags at the moment.

I will have to resolve traction issues in 1st and 2nd gear, before I could pull off a respectable ET.

[DMM]

Justin with the bigger turbo's im sure you will see the benefits of the new exhaust! The turbos right now are spinning way out of their efficiency range. The extra decrease in back pressure from the new exhaust is making them huff and puff way out of their league

Looking forward to seeing how much rubber has been left in the rear gaurds after your weekend orientation

[BMW86]

Originally Posted by JD75

Hey Pete, the car is a torque monster.

It's so very tractable when in 4th or 5th gear, from as little as 2,000 RPM.

When at WOT the engine is pulling very hard at the top of third, grab fourth and the surge of torque is significant to say the least.

Is 300 enough...

In the short term yes, in the long time I imagine no, haha.



Yep, I tend to agree.

Ummm, I suspect two of these will help the cause somewhat.

[JD75]

Originally Posted by adrian@vishnu

Nice results Justin!!

Your car seems to make very good power, and we are certainly struggling for fuel. We may want to consider increasing the meth ratio to less water and more meth. This would improve the AFRs. They are not terrible, but it would certainly be better to see them around 12.5 for most of the run.

Cheers,

Adrian

Hey Adrian,

I am VERY happy with the results we have achieved.

With regards increasing the Meth to water ratio of the mix we are spraying, I am not sure AFR's will benefit significantly from that.

We are already using a Meth to water mix of 60/40.

Unfortunately the flow sensor used in the Coolingmist kit, requires the minimum amount of water in the mix to be 30%.

What we need to do is increase the amount of fuel being injected, by the fuel delivery system.

As such Adrian the big question is, how far away is Vishnu from releasing their fuel system upgrade?

I believe the upgrade was primarily aimed at the guys running "upped" turbos.

However as the engine is making very good power, it would seem we have already encroached upon the ceiling of the "stock" fuel system.

Cheers,

JD.

[JD75]

Originally Posted by Unkie

That's fantastic Jus! Some fantastic numbers, and more the point, fantastic area under the power curve!
That graph just screams daily drivability

Thanks for the details, certainly will help a number of other owners decide on mod choices with an informed expectation of power gain

Yes, the drivability of the car is something that must be experienced, to truly appreciate.

The "stock" car had a significant amount of low end/mid range torque.

My "tuned" car has a huge amount of low end/mid range torque.

Cool mate, my pleasure.

I have thoroughly enjoyed the "build" process.

As such I'm more than happy to provide some solid info and in doing so, help dispense with the BS that exists on internet forums.

Cheers.

[1q2w3e4r]

Surely the fuel issue is nothing an 044 pump couldn't sort out?

[adrian@vishnu]

Unfortunately the stock fuel system is quite complex, and an 044 isn;t going to cut it. We are working on something, but not available for a while yet. I use an 044 in my other car.... great pump!!

As for the meth %, I though Dale indicated the mixture was the other way around... 60% water, 40% meth. I am sure that is what he said. Either way, since mixtures are suffering, I would be moving towards 70% meth.

The other thing to remember is that the main reason people want rich mixtures is to suppress knock. There is no evidence of this with your butter smooth dynos.

Cheers,

Adrian

[JB4-335]

Originally Posted by JD75

Hey Adrian,

I am VERY happy with the results we have achieved.

With regards increasing the Meth to water ratio of the mix we are spraying, I am not sure AFR's will benefit significantly from that.

We are already using a Meth to water mix of 60/40.

Unfortunately the flow sensor used in the Coolingmist kit, requires the minimum amount of water in the mix to be 30%.

What we need to do is increase the amount of fuel being injected, by the fuel delivery system.

As such Adrian the big question is, how far away is Vishnu from releasing their fuel system upgrade?

I believe the upgrade was primarily aimed at the guys running "upped" turbos.

However as the engine is making very good power, it would seem we have already encroached upon the ceiling of the "stock" fuel system.

Cheers,

JD.

Hey JD,

The new FCB (Fault Control Box) from coolingmist allows for a higher mix of meth. It's stated that the FCB is for users that want to run more than 70% meth. Check it out, it's the latest System X.

[DMM]

Give us some more results Justin!!

Unfortunately there's nothing more the meth will do - the engine is almost getting over satured now! The fuel curve you see is the best it will get without going to a standalone management system.