turbo97se

Hi all

Here is a premod dyno I did yesterday. Only 368 HP. Couldn't get the torque reading. I removed the front cover and tried to hook the tach probe up to one of the plug leads but couldn't get a good tach signal. I was in a bit of a hurry so didn't mess with it too much. Does anyone know exactly where I can pull the tach signal? The place I took it to Dyno don't know much about Mercedes.

Dyno seems low. I have seen people putting 400s down. It probably didn't help blasting down the highway right before. Also I have noticed my S/C shuts down after several hard pulls on a hot day (at least that's what it feels like). I haven't checked IATs .. suspect my IC pump is not super healthy. That should change with the Meziere .. just thought I would share... Green line was 4th gear pull .. might ignore that one!

Forrest Gump 9

You can get the tach signal from coil #1. It's the first coil on the passenger side. Either plug wires on that coil is ok.

turbo97se

Thanks ... I tried that on the driver's side (number 2 I guess) but the tach signal was jumping all over the place ... line was not long enough to reach to passenger side. ... but should be the same right?

Forrest Gump 9

Only #1 will work.

chawkins2001

Is that from a dynamics or mustang dyno?

turbo97se

Thanks man ... good to know ... I would have tried that too but the line wasn't long enough! Makes sense I guess if you want to check timing ... and not want people to get the wrong line.

It's a dyno jet .. it says so on the dyno graph

AWOL

410 id say is the average dynojet number you want

GT-ER

I am willing to bet money your pump is dead. The same thing happened to me. I put down 395whp with a rather squiggly graph like yours and then swapped to pump and put down 429whp with a super smooth graph.

GregMB

368HP with the typical 19% driveline loss factored in comes out to 455HP....

400HP would be a 494HP motor. That would be pretty stout for a "stock" motor.


Probably a little bit of heat soak....and as I'm sure everyone will start telling you the number itself isn't very useful since every dyno is different.


-G

turbo97se

I'm greedy ... I want more ... hence the power adders to come

Thanks ... yeah I think there may be an issue there. As I had mentioned sometimes the supercharger seems like it is just not there. Any way to check the pump itself or just look at IATs? I guess it doesn't matter, either way it's going in the trash

Several folks on here say 469HP quoted is a marketing tool and real numbers are closer to 500 anyway. Numbers other folks have put out seem to support the 500.

AWOL

I meant for stock

turbo97se

LOL ... I know! Doesn't change my greed factor

Oh @GT-ER which part is "squiggly"?

Jimshorts

my guess is that you were heat soaked...

i was just at the dyno on sunday, a dynomite dyno, and i put down 411whp and 477wtrq and im sitting bone stock

GT-ER

The entire graph is squiggly which suggests low timing ( the ecu trying to protect the engine due to excess heat ).

Notice how squiggly your lines are vs. my latest dyno:



The lines are smooth and "smoothing" is at 0 vs. your dyno that has "smoothing" set to 5.

turbo97se

Thanks for taking the time to explain! I guess I really need to fix that heat issue (soon ... soon ). I think the ambient was only 90 that day.