BMW E24M6 M635CSI S38 3.6 Dyno 311RWHP 91 Pump Gas. 363hp crank. 102HP per litre.

Gents,
I managed to fine the last few hp I was after. This is the absolute limit on what standard S38-B36 with cams, exhaust system and solid tune can produce on pump 91 Octane gas.
Previous set up was 305rwhp hot runs/passes. With some "Love" tweaking the system I was able to increase improve the revving characteristics and throttle response and widen the hp and tq curve.
At present set up the pick power is reached at the same rpm as before at 6600rpm but instead of falling at around ~7200rpm now it keeps the ~310rwhp up 7800rpm. Mid range TQ remains the same at pick at ~3800rpm at 253RWTQ.
Torque is as flat as it allows me with the given limitations on std engine. At around 3800rpm the engine is already "in-cam" and as the rpm increases the HP adds to how hard the engine will be pulling towards the new red line of 7800rpm. Previously it bothered me when the engine will fall on its nose because power was closing at 7200rpm and pass that rpm's it will not pull any more because the tq and hp were falling.
The lower rpms from idle up to 3800rpm is also improved with having hi performance cams. Intake resonance flap is working from 1800rpm up to 3800rpm. The Flap is also tuned with % in relation to the throttle position during part throttle under cruise.(too long to explain why)
I over achieved my expectations with the given limitations on std S38-B36. SAE at the crank is 361hp. 369hp DIN.
I will try to make some pulls shortly against std E34M5 3.6.
Regards,
Anri

[@elcormano1775]

Hi Anri, great work on your 3.6 I have an S38b36 that needs rebuilding. I love the philosophy of no compromise on reliability and driveability. Could you please give me some more details on the engine itself? I'd like to basically replicate what you've done. Thanks from Australia

[@FizzyMotors]

very impressive

[@ataorkunoguz5451]

What brand of cams and exhaust system did you use?

[@Jovic1993]

Hi Anri, I need to find a Kind of coils to my S38b36, because my R8 coils doesn't fits on it. Don't reach until spark plug connection. What do you use in your S38b36?

[@raphaelrichard92]

Awesome work , which numbers do you think you can get on the s38B38 ? Just bought a 1992 M5 e34 3.8

[@anridemirdjian5011]

Hi, congrats on your 3.8 M5. Seach in my other videos, I have Dytona 3.8 tuned and completed. Cheers.

[@Mburin_B]

the m1 procar had basically the same engine which made 470hp there's a lot more upgrades that could be done, how big is your bank account? i have a 91 m5 with an exhaust cam and a tune no cat's i am at 340hp crank and 200,000 miles on it

[@anridemirdjian5011]

Hi, "an exhaust cam" ? The Red E34M5 3.6 made 335hp crank with Catalyst all stock engine with few minor tweaks. Without Cats the stink is very bad I have tried it ones and never again !!! On my engines I always run cats without any power loss.

[@Mburin_B]

@@anridemirdjian5011 the cats were fried from the previous owner driving it with a misfire for weeks dinan made a 2mm higher lift ex cam coupled with slightly retarded ex cam gear with there chip, this is a us spec which only had 311hp

[@lanciadeltas416]

Stock cams ? What standalone ?

[@anridemirdjian5011]

Hi, the cams are not stock. Engine management is Haltech.