[JD75]

Hey Gents,

here is a dyno graph from a FBO RB Turbo car with upgraded turbo inlets, running an E50 blend + Methanol injection (50/50) with a JB4 G5 iso tune and a custom Trebila Performance E85 backend flash.

FYI,

there is power left on the table, as a misfire issue is preventing the engine from revving beyond the 6,400rpm'ish mark. Once sorted the boost curve can be made more linear and I suspect peak power will occur around 6,500+rpm.

The car has a Fuel-It Stage 3 LPFP installed in preparation for a Vargas Double Barrel Shotgun kit, which in combination will allow us to run 100% E85. :-)

However for those guys not wanting to achieve maximum horsepower figures, a Fuel-It Stage 2 LPFP upgrade will be sufficient (providing your HPFP is healthy) if you stick to an E50 blend with use of the E85 backend flash for appropriate adjustment of the fuel scalar tables.

Cheers,

Justin.

P.S. for those guys that are interested in the use of a custom E85 specific backend flash, I cannot say enough good things about the professionalism and knowledge of David Trebila.

P.P.S. feel free to PM or email me at justin_dean75@yahoo.com.au regarding hardware specifics and pricing on all of the above.

[naynay]

amazing. congrats!

[BEE35i]

Excellent results Justin!

Congrats to you and the boys at Advan Performance/BMR

[_ink]

Insane results!!!!

[BEE35i]

Keen to see how that white 335i @ Advan with the TFT inlet goes! should make more power Justin

[waterbottle1]

that looks funnnnn )))

[fo55il]

focking wow!!!!!!

[s2kadrenalin]

I've been meaning to ask, what gear is typically 1:1 closest for dyno pulls in these cars? I'm assuming 5th?

[1cut808]

Very nice effort indeed

[JD75]

Originally Posted by naynay

amazing. congrats!

Yeah, I will be the first to say that the Vargas silicone turbo inlet pipes are performing better than I expected.

Originally Posted by BEE35i

Excellent results Justin!

Congrats to you and the boys at Advan Performance/BMR

Thanks mate.

Originally Posted by _ink

Insane results!!!!

Yep, RB's with upgraded inlet pipes seriously kick ass.

[JD75]

Originally Posted by BEE35i

Keen to see how that white 335i @ Advan with the TFT inlet goes! should make more power Justin

Yeah that makes two of us.

[JD75]

Originally Posted by s2kadrenalin

I've been meaning to ask, what gear is typically 1:1 closest for dyno pulls in these cars? I'm assuming 5th?

The use of 4th gear is considered the standard when dyno tuning. A 1:1 ratio on the output shaft of the gearbox is not that relevant when final drive ratios differ between vehicles. Also 5th gear in some cars would exceed the road speed the DME/ECU would permit if it's not speed delimited.

[JD75]

Originally Posted by 1cut808

Very nice effort indeed

Thanks bud.

[135i2]

nice indeed

[Forced_downunder]

Hi,

I just wanted to chime in and say a massive thanks to Justin for project managing the mods on my 135i. I can't speak highly enough of his involvement, dedication to delivering a result in a timeous fashion and his personal commitment and time he has invested in this project so far.

It's really exciting having someone completely immersed in delivering the result I'm after with this build and where it will end up.

We have lots of exciting firsts coming up which Justin I'm sure will share in subsequent posts.

Looking forward to the next stage we are about to embark on.

[bmwheath]

Top work Justin, huge numbers thats 532rwhp! with a good bit more left in it

[Socket]

Insane

[Forced_downunder]

More to come. Waiting on the Motiv clutch to arrive then we can see what the curve looks like all the way to max RPM. Then the Vargus Double Barrel HPFP to go 100%E85. Who knows what's left in terms of gains.

[JD75]

Hey guys,

thank you kindly for all the positive comments and feedback, I apologise for not posting sooner but I've been pretty flat out providing consultation and hardware to 4 or 5 other customers that also have some pretty serious builds happening.

The MOTIV twin-plate clutch or more precisely the single mass flywheel should sort out the cylinder 6 misfire we were constantly experiencing on Greg's car around 6,250rpm.

Once the engine can rev to redline and with the use of 100% E85 I foresee a peak power point of around 6,500rpm with something in the vicinity of 410-415rwkW, perhaps a bit more but we shall see.

In lieu of the excellent Trebila Performance flash we have loaded to the DME we now have a flat 12:1 AFR trace across the entire rev range, this will allow us to increase the boost target in the lower to mid rpm range to safely flatten out the boost curve where the engine is most susceptible to knock at peak torque.

Once running straight E85 via the VTT Double Barrel Shotgun HPFP upgrade kit and Fuel-It Stage 3 LPFP, we'll probably go back to the more widely accepted AFR target of 12.5:1. Admittedly 12:1 or high 11's is a bit on the rich side, but given we are pushing the envelope on an Aus N54 whilst using E50 Peter and I would rather err on the side of caution, as 400rwkW is still a fuck ton of power in anyone's books, haha.

Thanks,

JD.

[harms]

Originally Posted by JD75

as 400rwkW is still a fuck ton of power in anyone's books, haha.

I think anything above 300 should be measured in fuck tons!