S54 Dyno Database

[siamkazi]

Just an update in case this helps anyone. Had signs of fuel pump failure so switched it out, Hassan did a re-tune for me and got it up to 334 and 'smoothened' out the drivability even more. Crazy how big of a difference it made from a driving standpoint.

[duracellttu]

This is my third tune and dyno session, all with different tuners. Details below on that evolution. Had a mix of issues between hesitation under throttle and overall drivability. My session today was with HTE Tuning today at EAS in Anaheim. Couldn't be happier with the results. Drive home was a dream and all the previous issues seem to be resolved! Thanks Hassan for your time and effort.

Build Details

- 2005 ZCP with ~159,750 miles
- 91 octane pump gas (Shell)
- CSL converted DME w/ CSL software from Kassel Performance, includes H-bridge to support CSL flap in snorkel
- OEM CSL Snorkel with functional flap
- OEM CSL Air Intake Temp Sensor in stock location on airbox
- OEM CSL air filter
- CSL Airbox w/ carbon fiber trumpets (Karbonius)
- Dinan high flow throttle bodies
- OEM air rail modified to fit updated Bosch MAP sensor (P/N 0 261 230 101) in OEM CSL location
- Bosch MAP sensor has OEM scaling from what I recall with previous tuners
- Radium Fuel Rail with pulse damper / Radium stainless steel fuel filter / Radium fuel pressure regulator / OEM fuel pump
- Bosch Injectors, 52lb/550cc @ 3 bar (EV14, P/N 0280158117)
- Ported Intake on Head
- Schrick Cams 288/280
- SuperTech Intake and Exhaust Valves and SuperTech Springs (OEM size and lift)
- Ported Exhaust on Head
- Supersprint V1 Stepped Headers (63.5 mm)
- Supersprint Catted (HJS 200-cell) Section 1
- Supersprint Resonated Twin-Pipe Section 2
- Supersprint Race Mufflers
- Electric Fan Conversion SPAL 2049
- 3.91 diff gears

SAE Correction Factor



STD Correction Factor



For those who are interested in knowing the details of the different tuners, I have used PCS Tuning, HD Tuning, lastly HTE Tuning. There is a hardware difference between the initial 2 and the last with Hassan. The last tune included Dinan TBs, 550cc injectors, and the Radium fuel system upgrades. Also, each tuner had different opinions on the rev limiter value. I put a marker at 8000 rpm for a more direct comparison versus max values in the legend. Not exactly and apples-to-apples comparison, so I wanted to make that clear. Hassan did note that the HD tune had the knock sensors were "way desensitized" and questioned the how safe it was.

RED: HTE Tuning
BLUE: HD Tuning
GREEN: PCS Tuning

SAE Correction Factor



STD Correction Factor

[CrisSilberGrau]

I gave it another watch and I can hear the tapping noise you are referring to. That is fairly loud and it almost makes me think that another follower is going flat. Hopefully the rattle kit solves the problem though.

Either way its not driven until parts arrive and the valve cover comes off again. Its been one of those mods that I've dreamed about but the follower aspect (with new/OEM/Schrick price wise is just insane now, looking at min 2600USD plus and then convert to kanadyan rupples is literally more than twice the price of cams).

Also I've chosen the 280s for the rocker reason, as not exactly necessary, and the difference is not that great between them.

jet_dogg yah man, car performed regardless but surely there was a little left on the table. For the mods, this imo is a very good result. Forgot to mention the fuel used was Shell new 93 here in Canada, performed very well in tests. The 91 previously was hot trash, per reviews vs the Petro 94.

[Slideways]

The rattling "clinking" noise as the rpms go up and the noise frequency increases as well. I know its common in the S54 but its very pronounced in the cabin and much too loud for my liking. Posted in case someone may have experience with it.

I gave it another watch and I can hear the tapping noise you are referring to. That is fairly loud and it almost makes me think that another follower is going flat. Hopefully the rattle kit solves the problem though.

[jet_dogg]

😂

I believe you've still got more power to be gained after valvetrain/vanos issues are all perfectly sorted.

[CrisSilberGrau]

repoman89 I think you misunderstood the final numbers. 329 vs 348 and 251 vs 257. Also different dyno, different days etc etc etc. Even with no tune, car on part throttle was a different beast. When doing cams, it just underlines other probable weak areas of the top side of the engine. In my case cyl 6 exhaust followers and maybe aging vanos components (?).

The power is most definitely felt. Pistons and rods would bump that up another 10-15 maybe but thats crazy low return for the investment required money and time wise. Either way its nice to look forward to. Now Im more concerned with the over all health, just doesnt sound good. Although I have no power loss, and zero codes.

EDIT: I see you took the baseline numbers, those runs were with cams just no tune.

[repoman89]

Basically round 3 on the dyno, and 3rd time with HassanEido HTE.

Mods since last dyno session:

• Spal 2049, aux delete
• Schrick 280/272

One the same rim and tire setup as in the sig. Previous setup without the above was 329.6whp/250.8wtq also done on DynoJet as was this. Unfortunately the place I went to last has gone out of business. For comparison sake, all the dyno tuning has been done on different dynojet. Doesnt mean much but its something.

Baseline runs:


Final numbers below, 347.6whp/257.5wtq. 11 revisions, cant thank Hassan enough always does amazing work.
PXL_20230505_194135033

Sounds decent.
PXL_20230505_163124436

During the break in process 500kms under 4k rpm part throttle and 500kms up to 6k part throttle ( >50%), I noticed some noise coming from the top front of the engine. After the dyno it got a bit more pronounced. Valve cover off and cylinder 6 exhaust rockers were replaced with new oem, the last rocker was the worst. However this was not the cause noise. My car has had issues with vanos even after it was done. I've swapped in a lower km intake splined shaft, I think the exhaust one maybe the culprit here too. So I've ordered some parts from beisian to redo the anti rattle kit, and if that fails ill need to look for splined shafts. Here's a video for reference:

PXL_20230511_030804447

So 7-10 hp and 6 ft*lb of torque for 280/272 cams? That is an interesting data point and makes cam upgrade a pretty tough sell

[jet_dogg]

That's a nice gain despite the dyno difference.

[CrisSilberGrau]

The engine sounds pretty normal. What noise are you referring to? Is there a response issue?

The rattling "clinking" noise as the rpms go up and the noise frequency increases as well. I know its common in the S54 but its very pronounced in the cabin and much too loud for my liking. Posted in case someone may have experience with it.

[Slideways]

What noise are you referring to? Is there a response issue?

Edit: Yeah, that is pretty loud and almost sounds like another follower is going flat.

[CrisSilberGrau]

Basically round 3 on the dyno, and 3rd time with HassanEido HTE.

Mods since last dyno session:

• Spal 2049, aux delete
• Schrick 280/272

One the same rim and tire setup as in the sig. Previous setup without the above was 329.6whp/250.8wtq also done on DynoJet as was this. Unfortunately the place I went to last has gone out of business. For comparison sake, all the dyno tuning has been done on different dynojet. Doesnt mean much but its something.

Baseline runs:


Final numbers below, 347.6whp/257.5wtq. 11 revisions, cant thank Hassan enough always does amazing work.
PXL_20230505_194135033

Sounds decent.
PXL_20230505_163124436

During the break in process 500kms under 4k rpm part throttle and 500kms up to 6k part throttle ( >50%), I noticed some noise coming from the top front of the engine. After the dyno it got a bit more pronounced. Valve cover off and cylinder 6 exhaust rockers were replaced with new oem, the last rocker was the worst. However this was not the cause noise. My car has had issues with vanos even after it was done. I've swapped in a lower km intake splined shaft, I think the exhaust one maybe the culprit here too. So I've ordered some parts from beisian to redo the anti rattle kit, and if that fails ill need to look for splined shafts. Here's a video for reference:

PXL_20230511_030804447

[heinzboehmer]

Not as far as I can tell. I was in high RPMs but wasn't shifting, was going down the freeway. Rev limit was set to 8400 RPM.

Weird, sorry to hear though. Hopefully it's back up and running soon!

[EthanolTurbo]

Overrev?

Not as far as I can tell. I was in high RPMs but wasn't shifting, was going down the freeway. Rev limit was set to 8400 RPM.

[heinzboehmer]

Just wanted to update: last time I posted I was heading to the dyno. The night before, after street tuning with Hassan, I bent my exhaust valves. About to put new hardware in and then it's dyno time.

Overrev?

[EthanolTurbo]

Just wanted to update: last time I posted I was heading to the dyno. The night before, after street tuning with Hassan, I bent my exhaust valves. About to put new hardware in and then it's dyno time.