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      03-06-2025, 08:48 AM   #1
JerseyM3
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BMW Drags vs. Many in Vegas

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Cool vid. Lots of BMW M cars represented here. The first race not sure what took the driver in the BMW so long...
BTW, the green RS3 is beta testing a yet-to-be released tune. The trap speed is impressive.


Last edited by JerseyM3; 03-06-2025 at 08:57 AM..
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      03-06-2025, 09:58 AM   #2
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Pretty surprised at how slow some of these are. But the RS3 isn’t surprising at all that’s pretty normal for a FBO ethanol build. Also wouldn’t be surprised if it had a hybrid turbo.
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      03-06-2025, 10:55 AM   #3
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That's fun, nice to see some folks out there enjoying their cars. Don't have to shatter world records to have a good time.
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      03-06-2025, 11:17 AM   #4
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Nice to see Bimmers represent on the Drag Strip! Props to the Owners.
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      03-06-2025, 11:27 AM   #5
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Quote:
Originally Posted by curtdragon View Post
Pretty surprised at how slow some of these are. But the RS3 isn’t surprising at all that’s pretty normal for a FBO ethanol build. Also wouldn’t be surprised if it had a hybrid turbo.
Yeah but I'll assume it's maybe drivers not good at anticipating the light and the dig. As far as that Audi, from what I've read on the Audizine forums it's an Iroz tester running a Unitronic beta tune with dp, intake and IC E85 blend that's it.
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      03-06-2025, 11:37 AM   #6
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Quote:
Originally Posted by curtdragon View Post
Pretty surprised at how slow some of these are. But the RS3 isn’t surprising at all that’s pretty normal for a FBO ethanol build. Also wouldn’t be surprised if it had a hybrid turbo.
that was the first thing on my mind... i only saw two fast cars - the first hellcat or whatever and the rs3 which trapped over 140... all the other cars were relatively pedestrian... always fun to watch but there wasnt any serious bmw racing here...
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      03-06-2025, 11:47 AM   #7
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Quote:
Originally Posted by JerseyM3 View Post
Yeah but I'll assume it's maybe drivers not good at anticipating the light and the dig. As far as that Audi, from what I've read on the Audizine forums it's an Iroz tester running a Unitronic beta tune with dp, intake and IC E85 blend that's it.
Yeah that’s pretty much FBO Stage 2. Local friend has a stage 2 8V which is the previous gen’s nd runs that. Seems like these are a bit faster out of the box. But as for the light and dig, the DAZA is notorious for delay with the launch control. So you have to for sure antic the light and go before.
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      03-06-2025, 01:08 PM   #8
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RS3 engines are absolutely bulletproof
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      03-06-2025, 02:47 PM   #9
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RS3 engines are absolutely bulletproof
to about 550AWHP then you start bending rods. Most guys will boost and Ethanol the hell out of them and that's when things go south.
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      03-06-2025, 04:50 PM   #10
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Quote:
Originally Posted by JerseyM3 View Post
to about 550AWHP then you start bending rods. Most guys will boost and Ethanol the hell out of them and that's when things go south.
im talking about the blocks. put carillo rods, mahle pistons, VAC main and rod bearings, and it’s good for over 2000bhp with enough boost and fueling.

if you build the s3/rs3 block out it offers more returns than building just about any other block.

Last edited by imc43; 03-06-2025 at 04:51 PM..
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      03-06-2025, 04:54 PM   #11
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Quote:
Originally Posted by imc43 View Post
im talking about the blocks. put carillo rods, mahle pistons, VAC main and rod bearings, and it’s good for over 2000bhp with enough boost and fueling.

if you build the s3/rs3 block out it offers more returns than building just about any other block.
oh yeah. No doubt. I was talking bolt on stuff and never opening up the engine. I think the IROZ guys have a last gen RS3 in the 8s in the quarter with a stock block and a turbo so big you can walk thru.
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      03-07-2025, 07:19 AM   #12
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Originally Posted by moriluvatar View Post
That's fun, nice to see some folks out there enjoying their cars. Don't have to shatter world records to have a good time.
...and in a proper environment.
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      03-07-2025, 07:57 AM   #13
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Quote:
Originally Posted by JerseyM3 View Post
to about 550AWHP then you start bending rods. Most guys will boost and Ethanol the hell out of them and that's when things go south.
Its not the HP but TQ that kills ;-)
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      03-07-2025, 09:31 AM   #14
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Quote:
Originally Posted by TheJerseyDon View Post
Its not the HP but TQ that kills ;-)
True dat. Too much E will do the damage...
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      03-07-2025, 09:32 AM   #15
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Originally Posted by G30 B58 View Post
...and in a proper environment.
Exactly. And if more of these environments existed then there might be less illegal activity pertaining to racing. But I digress.
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      03-07-2025, 11:37 AM   #16
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Quote:
Originally Posted by imc43 View Post
RS3 engines are absolutely bulletproof
Nope. Below is correct.
Quote:
Originally Posted by JerseyM3 View Post
to about 550AWHP then you start bending rods. Most guys will boost and Ethanol the hell out of them and that's when things go south.
Quote:
Originally Posted by imc43 View Post
im talking about the blocks. put carillo rods, mahle pistons, VAC main and rod bearings, and it’s good for over 2000bhp with enough boost and fueling.

if you build the s3/rs3 block out it offers more returns than building just about any other block.
You can’t say bulletproof then say built engine. Because that’s why you’re building it lol
Quote:
Originally Posted by JerseyM3 View Post
oh yeah. No doubt. I was talking bolt on stuff and never opening up the engine. I think the IROZ guys have a last gen RS3 in the 8s in the quarter with a stock block and a turbo so big you can walk thru.
Quote:
Originally Posted by TheJerseyDon View Post
Its not the HP but TQ that kills ;-)
Quote:
Originally Posted by JerseyM3 View Post
True dat. Too much E will do the damage...
Not too much E. Too much torque. I’ve heard about builds bending rods but other tunes no problem on same E content just tuning for less torque.
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      03-07-2025, 01:14 PM   #17
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Quote:
Originally Posted by curtdragon View Post
Nope. Below is correct.



You can’t say bulletproof then say built engine. Because that’s why you’re building it lol





Not too much E. Too much torque. I’ve heard about builds bending rods but other tunes no problem on same E content just tuning for less torque.
from what I've read and I cannot confirm as I've never had it happen to me luckily but those running tunes then add an E mix, and that's when things go boom. Maybe it's too much boost and the flash ups the boost? Not sure.
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      03-07-2025, 01:21 PM   #18
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Quote:
Originally Posted by JerseyM3 View Post
from what I've read and I cannot confirm as I've never had it happen to me luckily but those running tunes then add an E mix, and that's when things go boom. Maybe it's too much boost and the flash ups the boost? Not sure.
Well it’s definitely torque busting the rods. So Audi world is different as most people run OTS tunes and custom tunes aren’t widely available for most chassis. The DAZA is the exception with DS1 tuning. What I’ve heard is people who use OTS have been the ones blowing rods. But I also know locals who have Unitronic OTS tunes and hit the drag strip several times a year for many years and no issues. People say if it’s a custom DS1 tune you’re fine as they can adjust the timing etc for lower torque in the problem range.
That being said when comparing the DAZA to the B/S58 the weak point are rods and the trans is usually great but then for the BMWs the weak point is the transmission.

Now this new RS3 could be different as it’s possible Audi has changed its rods. I’ve also heard of people bending rods on a stock engine.

In any case I think the DAZA vs 58 feud will be a long one
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      03-07-2025, 04:33 PM   #19
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Quote:
Originally Posted by curtdragon View Post
Well it’s definitely torque busting the rods. So Audi world is different as most people run OTS tunes and custom tunes aren’t widely available for most chassis. The DAZA is the exception with DS1 tuning. What I’ve heard is people who use OTS have been the ones blowing rods. But I also know locals who have Unitronic OTS tunes and hit the drag strip several times a year for many years and no issues. People say if it’s a custom DS1 tune you’re fine as they can adjust the timing etc for lower torque in the problem range.
That being said when comparing the DAZA to the B/S58 the weak point are rods and the trans is usually great but then for the BMWs the weak point is the transmission.

Now this new RS3 could be different as it’s possible Audi has changed its rods. I’ve also heard of people bending rods on a stock engine.

In any case I think the DAZA vs 58 feud will be a long one
Yeah no doubt it's torque doing it. What I am saying is I've heard all things considered when tuned running 93 Oct everything seems to be fine. It's when using Ethanol on top of that tune is when the boom happens. Is it because boost goes up? More timing? Maybe. Probably. Increase in power too much and that happens. But the previous 8V-8.5V generation 2.5l DAZA tunes are a plenty. From flash ecu/tcu to piggybacks have really made these cars big overachievers. The trans needs a tcu tune when going with a stage 2+ tune to increase clamping forces an shift points because it starts to slip after that. I am unaware of Trans failures or half-shaft issues tho. These cars are pretty well-built.
The current 8Y and soon to be released 8.5Y RS3s utilize a BOSCH ecu and have been the Fort Knox of computers. Unitronic is the tuner I understand closest to cracking it as their tune should be hitting the market in short order. Should be interesting and yeah the German equivalent of Mustang vs Camaro will live on for a long time.
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