Article: Take a look at this Weistec R231 SL63 AMG M157 build featuring upgraded turbochargers, downpipes, and ECU tuning which produces +352 lb-ft torque at the wheels

[Sticky]

Incredible gains here and a very well detailed and photographed build from Weistec Engineering. This R231 SL63 AMG receives the full gamut of Weistec M157 performance products which includes their M157 turbocharger upgrade as well as their M157 downpipes.

Of course Weistec tuning makes the hardware all work seamlessly and the result is an additional 199 horsepower at the wheels as well as an eye opening 352 more lb-ft of torque at the wheels. That is on 91 octane pump gas, not race fuel.

This is what a high quality and well detailed build looks like folks:

Weistec installed its in house designed and manufactured Turbocharger Upgrades, True Downpipe and Exhaust Upgrades, ECU Calibration, and Weistec Designed Spark Plugs and gave this gorgeous drop top 199 more horsepower to the wheels, and a whopping 352 more foot pounds of torque to the wheels. This combination creates one of the most exhilarating rides on the planet, while pairing off with the most euphoric V8 sounds ever to bellow out of a set of quad AMG exhaust tips.

- Turbo Impeller Upgrade
- Downpipe and Exhaust System
- Spark Plugs
- High Flow Air Filters
- ECU Calibration
- TCU Calibration

Needless to say, the results were staggering.

[SpeedLimit?]

All this with quality bolt ons, quality tune and crap fuel...amazing.

[onisyndicate]

Jesus christ 826 wtrq at 2.7k rpms. Want to talk about throwing your head back! Wiestec has made me appreciate mb more and more!

[ezec63]

All this with quality bolt ons, quality tune and crap fuel...amazing.

Yea the crap fuel is a bummer its almost a waste of a turbo upgrade if your going to run it on piss grade 91 octane. On stock turbos they made 645whp on 91 octane so the gain is ~20whp. On 93 octane and stock turbos they made 685whp so more power then this turbo upgraded car on 91. They need to pump in some MS109 or above and really let those upgraded units sing I wonder what they can do.

[Sticky]

Yea the crap fuel is a bummer its almost a waste of a turbo upgrade if your going to run it on piss grade 91 octane. On stock turbos they made 645whp on 91 octane so the gain is ~20whp. On 93 octane and stock turbos they made 685whp so more power then this turbo upgraded car on 91. They need to pump in some MS109 or above and really let those upgraded units sing I wonder what they can do.

You can't just look at peak hp. The turbo upgrade provides massive torque.

It's not a waste to use this kind of power on 91. It means you can have it every single day. It also means there is just more room to crank it up on race gas.

[ezec63]

You can't just look at peak hp. The turbo upgrade provides massive torque.

It's not a waste to use this kind of power on 91. It means you can have it every single day. It also means there is just more room to crank it up on race gas.

True True that's a massive powerband especially in a RWD car and the SL63 is relatively light for what it is and compared to the other awd M157 cars. It has to be a blast to drive top down burning tires through every gear. Since the stock turbo car made 40whp more on 93 then 91 I wonder what this would make? 700whp? That would be bananas in this car

[Sticky]

True True that's a massive powerband especially in a RWD car and the SL63 is relatively light for what it is and compared to the other awd M157 cars. It has to be a blast to drive top down burning tires through every gear. Since the stock turbo car made 40whp more on 93 then 91 I wonder what this would make? 700whp? That would be bananas in this car

I don't know if it will crack 700 on pump but it's easily capable of 700+. I wonder what the limit is really. It's probably the trans. Maybe the internals.

I don't know. Weistec does though.

[Stevenh]

All this with quality bolt ons, quality tune and crap fuel...amazing.

Eh, say what you will, but I'm more interested in real world numbers than hero runs that are using a fire hose for meth injection.

[93siro]

I dont know about you guys but im not into having a diesel like powerband. And holy crap thats one expensive way to just upgrade the compressor side. Thats vtt stage 3 price teritory.

[leveraged sellout]

It's a shame some states are stuck with 91...we have 93 here in the midwest.

Funny though how even with turbo upgrades, the M157 is at most a 700whp (for now) engine, whereas with full bolt-ons (but no turbos) on 93 an S63tu might get very close. Not with torque, this engine is just pornographic in that regard. But...an interesting comparison. Also, tune + boltons on the Audi 4.0 isn't too far behind either. Those inverted heads really help with power production.

[ezec63]

It's a shame some states are stuck with 91...we have 93 here in the midwest.

Funny though how even with turbo upgrades, the M157 is at most a 700whp (for now) engine, whereas with full bolt-ons (but no turbos) on 93 an S63tu might get very close. Not with torque, this engine is just pornographic in that regard. But...an interesting comparison. Also, tune + boltons on the Audi 4.0 isn't too far behind either. Those inverted heads really help with power production.

Thats not really true this has more to do with the piss poor quality gas than anything else. S63tu only get close to that number with full bolts on like cat less down pipe, full exhaust, intake, and methanol injection which is extra octane not really considered pump only anymore. A weistec tuned M157 did 685whp years ago with only a tune cat less downpipes and 93 octane. Add on a full exhaust the new AMS or renntech inlets/airboxes and give it the extra octane from meth and it will be well above 685. I haven't seen a s63tu hit 685whp with only 93 and no meth. Also AMS has shown 790whp on a M157 with nothing else done stock downpipes and all so its far from stuck at 700whp

[ezec63]

It's a shame some states are stuck with 91...we have 93 here in the midwest.

Funny though how even with turbo upgrades, the M157 is at most a 700whp (for now) engine, whereas with full bolt-ons (but no turbos) on 93 an S63tu might get very close. Not with torque, this engine is just pornographic in that regard. But...an interesting comparison. Also, tune + boltons on the Audi 4.0 isn't too far behind either. Those inverted heads really help with power production.

http://www.benzboost.com/showthread....eel-horsepower here you go posted on this site over 2 years ago with just a tune and down pipe on 93 octane. The inverted heads don't really do much for power they are so you can put the turbos in the valley of the motor significantly reducing the piping and speeding up turbo spool a lot.

[Sticky]

The inverted heads don't really do much for power they are so you can put the turbos in the valley of the motor significantly reducing the piping and speeding up turbo spool a lot.

Not exactly true. The BMW manifold is a pulse tuned cross engine exhaust manifold which makes a big difference in power.

[ezec63]

Not exactly true. The BMW manifold is a pulse tuned cross engine exhaust manifold which makes a big difference in power.

We already went over this and i provided answers directly from the head of power trains at BMW M saying its mostly for maximum spool for the turbos they create zero interruptions between exhaust pulses making sure max energy is transferred to the turbo wheels for spooling instead of colliding and causing turbulence. Yes this also helps efficiency but you won't make a turbo magically flow more then it can this is primarily a response upgrade.

[Sticky]

We already went over this and i provided answers directly from the head of power trains at BMW M saying its mostly for maximum spool for the turbos they create zero interruptions between exhaust pulses making sure max energy is transferred to the turbo wheels for spooling instead of colliding and causing turbulence. Yes this also helps efficiency but you won't make a turbo magically flow more then it can this is primarily a response upgrade.

If you think extra exhaust pulses aren't helping power I refer you to the N63.

Turbos work based on exhaust pulses. Feeding them more isn't hurting them. The S63/S63TU is proof of that.

[ezec63]

Thats not really true this has more to do with the piss poor quality gas than anything else. S63tu only get close to that number with full bolts on like cat less down pipe, full exhaust, intake, and methanol injection which is extra octane not really considered pump only anymore. A weistec tuned M157 did 685whp years ago with only a tune cat less downpipes and 93 octane. Add on a full exhaust the new AMS or renntech inlets/airboxes and give it the extra octane from meth and it will be well above 685. I haven't seen a s63tu hit 685whp with only 93 and no meth. Also AMS has shown 790whp on a M157 with nothing else done stock downpipes and all so its far from stuck at 700whp

Also just to clarify since It can be confused with the way I worded my post. The 685 whp I posted where Weistec hit 685 whp on 93 octane with only a catless downpipe was on the stock turbo. The 790 whp that AMS/Alpha recorded was with the Alpha 9 turbo upgrade on an other wise completely stock car but on 100 octane.

[chrisisnapping]

I dont know about you guys but im not into having a diesel like powerband. And holy crap thats one expensive way to just upgrade the compressor side. Thats vtt stage 3 price teritory.

No cores and the price is over 17k, and almost 5k for downpipes and midpipes with no cats. I thought BMW tax was bad.

but from what i understand Weistec has a great reputation in the MB mod market and there is a demand for their products, so i guess there's that.

[Dopplemax]

This is my car. We are working now on a VP Extreme 111 octane tune as well as a methanol injection system and are retuning on a mustang dyno. I am new to this forum but will keep you updated on progress if your are interested.

[Sticky]

This is my car. We are working now on a VP Extreme 11 octane tune as well as a methanol injection system and are retuning on a mustang dyno. I am new to this forum but will keep you updated on progress if your are interested.

Um, yeah, we're interested.

I haven't seen Weistec do any meth tuning so this will be very interesting to see. They usually are not big on meth.

[Dopplemax]

That is true. Since I'm on the East coast we are now working collaboratively with them and a Weistec dealer in VA.

[Sticky]

That is true. Since I'm on the East coast we are now working collaboratively with them and a Weistec dealer in VA.

Very interesting. This is going to be fun to watch.

As soon as you have the before/after of the meth tuning please post it or send it to me.

[Dopplemax]

Will do.