The operator did comment there was much more power available and mentioned over fueling?
Dyno experts please comment.
Over fuelling can also be your car chucking in fuel due to high IAT
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The operator did comment there was much more power available and mentioned over fueling?
Dyno experts please comment.
Putting a 55 S/C on a dyno is not for the faint hearted, I have seen a few experienced dyno operators struggle and in my case bottle it when the car started snaking, loads of factors come into play, loading, the way the car is strapped down, the gear pulls, tyres, wheels (bent rims) I presume it was in dyno mode?, the only guy I have seen run them very well and consistently was Jerry for EC, I have not seen EC UK but I would expect the guys to do just as well.
Problem is the more runs you do, you can see the power get lower and lower, so the key is to get it right pre run then full run for the power figure. Your power is at the lower end, so no reason to struggle unless for some of the reasons above.
Over fuelling can also be your car chucking in fuel due to high IAT
The graph at the time does not show this, i presume the map from Eurocharged for obvious reasons is set up to be safe.
The next logical step would be to wait for Jerry to visit again and work his magic and dyno tune properly.
The EC map is set up to be safe, which for me is the best approach. Jerry tuned my car on the dyno but set it up at my request to run a very safe map. I know there was a 55K at the MSL tuning day that made about 540bhp with Jerry doing a live dyno map as he would normally do. The owner then asked Jerry to change the fuelling and lean it out. The car went up to over 550bhp but obviously more risk - the owner seemed happy though, each to their own and all that
The graph at the time does not show this, i presume the map from Eurocharged for obvious reasons is set up to be safe.
The next logical step would be to wait for Jerry to visit again and work his magic and dyno tune properly.
Thats exactly what I thought, I am more than happy with it as is, the map on its own changed the cars drive-ability so very impressed with Eurocharged.
Its not just about numbers......or is it:fail no please I do not want to turn into a number chaser
Yep most run Rich towards the end, and as Simon stated this is the preferred safety net, read my old sticky on Boost reduction, I would also remove your pulley and check its in full contact and not slipping, it will become clear when you remove and check.
This is the things I would do before the next dyno or tune
1) check for boost leaks
2) check the pulley
3) fit a smaller gates green belt (Amazon)
4) NGK Colder plugs
5) oil / filter if not already done
6) gearbox flush and filter change if not already done
7) depending on the miles and age change your HT leads, bosch do them and identical to merc but a fraction of the price
8) coolant change if not already done, using merc fluid
9) Check for oil leaks on your cam covers, and only fit original gaskets if leaking
10) change the supercharger oil I used Mobil jet oil 2
11) Diff oil for some reason my old cls55 used a different Castrol to the E55, you can check here What engine oil? Which is the best engine oil for my car? | Castrol UK
12) reload your last map and disconnect your battery overnight
13) consider a TCU Tune
14) clean your throttle body, plenty of sprays on the market
15) Mercedes fuel cleaner MB # A 000 989 25 45 12
I know its not cheap, but if you do it in stages and plan to keep the car and look after it, I think this guide will help your car run and perform better I am sure.
Problem is the more runs you do, you can see the power get lower and lower, so the key is to get it right pre run then full run for the power figure. Your power is at the lower end, so no reason to struggle unless for some of the reasons above.
The other strange thing and remember this is my very first dyno session, but the first run was aborted you can see that on the vid then a delay as he checked out the back of the car followed by the second pull another delay as he was still not happy at the back of the car followed by the last run, each time improving as it went along, i wonder what the figure would have been straight off?, we will never know.
Problem is this time of the year testing is pretty pointless, most 55s wont suffer with heat problems if running well, I would be interested to see the results when its 30c outside.
I ran in the summer approx. 580bhp, with just a EC uprated Heat Exchanger, and standard bosch 10 pump, loads of data logging, and never suffered heat problems, I know its a problem, but most cars that run well and fluids changed at the correct times, with upgraded HE don't really suffer to be fair.
Ginger, post your graph up, it may have the AFR reading on there.
Jules.
Guys i have no idea if this is good or bad after 4 or 5 WOT on the rollers to get these readings the curves look ok to me, comment please.
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