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Bought this car right before Thanksgiving 2014. Melted #8 piston the day I bought it. It had lots of mods and parts I could work with but clearly some lack-luster installation on some Pieces. Car sat for a year. Dropped a used motor in. Cleaned up the modded pieces. Re-installed them or repaired them. (Exhaust) and added some New pieces. The result isn't bad at all. 86 deg f. Day.
Mods are simple .
Shorty no name headers.
X pipe with race cats. Full 3" exhaust put of dual magnaflows
Separated coolant with a tank I made with upgraded Bosch pump
180mm crank pulley
82mm T.B.
Belt kit
550cc injectors
K & N filters. (Edit)
Unknown tune.
93 octane pump
Here is the dyno with 2 clear timing dips. Probably water inject it later.
Great job bro. Glad to see you back up and running. Hope you get a chance to enjoy your Beast now.
DVC! Nice to see a familiar face. Thanks for the support. Yeah. I just started driving it and it is exactly everything I was Hoping for. A very comfy armchair with Damn good power.
Now to rebuild the rest of my life. But at least now I get a few smiles on the road again. For a car guy, this is a pretty good place to start
Great Pull. Nice to meet you in this virtual world!
Originally Posted by RedBullJnky
Very nice!
I was pleasantly surprised. The previous owner dynoed her on a Dyno Dynamics Dyno I believe. It only showed 464 h.p. This recent one was on a Dyno Jet. I am used to Dyno Jet numbers. But who knows. The previous motor may have been somewhat limping along when he did the lower numbers. Whatever the case. I'm sure I have about 20-30 more easy horsepower left in her. I will verify this summer. I might remove cats and make them swapp-able with a straight pipe using V-bands. I might throw on some long tubes. I will definitely do the easy stuff first with intake changes. And soon to be Water Meth (mostly water) injection just to band aid the limited charge air cooler. Blue tooth OBDII and Torque app soon to follow to verify charged air temps with intake and water injection changes.
I don't see me doing much more than that with this car. She's been great since she got back on her feet and I'm pretty satisfied. Great car.
Hats off to whoever tuned it or built it!!! I keep checking out the dyno graph and numbers. Nice graph lines (fairly straight) especially on the Air/Fuel ratios. The majority of guys who have posted dyno results recently have issues with this (myself included)...
Also like the flat power band (basically over 400 hp from 4,000 rpm to 6.500).
Fingers crossed on it staying together!
I can certainly do a video for ya. I'll just make a quick trip to Mexico. Which is actually a thing In Houston.
You can zoom in on the AFR's and its 12.0 across the most of the rpm band. The dyno wideband reads a little lean by .20 (edit). So should be ok for a while, but I still need to have the tune loaded and looked at by eurocharge. Also, the AFR's are slow to dip into the proper range (initial throttle at low rpm), but I noticed that problem on all the merc tunes I've seen. Curious if anyone has a fix for this on the stock ecu.
I can certainly do a video for ya. I'll just make a quick trip to Mexico. Which is actually a thing In Houston.
You can zoom in on the AFR's and its 12.0 across the most of the rpm band. The dyno wideband reads a little lean by .02. So should be ok for a while, but I still need to have the tune loaded and looked at by eurocharge. Also, the AFR's are slow to dip into the proper range (initial throttle at low rpm), but I noticed that problem on all the merc tunes I've seen. Curious if anyone has a fix for this on the stock ecu.
12:1 sounds very lean for supercharged V8. I would talk to to a tuner before you start beating on the car. You want thermal protection from your AFR.
Bought this car right before Thanksgiving 2014. Melted #8 piston the day I bought it. It had lots of mods and parts I could work with but clearly some lack-luster installation on some Pieces. Car sat for a year. Dropped a used motor in. Cleaned up the modded pieces. Re-installed them or repaired them. (Exhaust) and added some New pieces. The result isn't bad at all. 86 deg f. Day.
Mods are simple .
Shorty no name headers.
X pipe with race cats. Full 3" exhaust put of dual magnaflows
Separated coolant with a tank I made with upgraded Bosch pump
180mm crank pulley
82mm T.B.
Belt kit
550cc injectors
Absolutely stock intake with autozone filters still installed.
Unknown tune.
93 octane pump
Here is the dyno with 2 clear timing dips. Probably water inject it later.
Our AFR's look similar. Mine read out 12.73 where you were showing 13.08. So they both seem lean, but I'm not sure from others how much. I hear 11.5 or so is where most try to get the tune dialed in for.
My dyno was reading off the exhaust tip so I'm sure wasn't as accurate as it could have been. Also recently had the fuel tank recall so have a new tank including pumps/filter...so wondering if I threw it on the dyno again off an 02 what the AFR would show.
Our AFR's look similar. Mine read out 12.73 where you were showing 13.08. So they both seem lean, but I'm not sure from others how much. I hear 11.5 or so is where most try to get the tune dialed in for.
My dyno was reading off the exhaust tip so I'm sure wasn't as accurate as it could have been. Also recently had the fuel tank recall so have a new tank including pumps/filter...so wondering if I threw it on the dyno again off an 02 what the AFR would show.
yeah. It takes forever to get down to 12.0 on the graph. Not comfortable with that, but there were 5 other tuned Mercedes on that dyno computer. They all did the same thing.
Originally Posted by novae500
some nice power you got and cool to see you baselined/fixed everything after the piston failure.
Our AFR's look similar. Mine read out 12.73 where you were showing 13.08. So they both seem lean, but I'm not sure from others how much. I hear 11.5 or so is where most try to get the tune dialed in for.
My dyno was reading off the exhaust tip so I'm sure wasn't as accurate as it could have been. Also recently had the fuel tank recall so have a new tank including pumps/filter...so wondering if I threw it on the dyno again off an 02 what the AFR would show.
11.8 is what I tune for on all of my turbo vehicles. Some cars need more. The Subaru STI liked bottom 11's.
I'll take the 3%-5% power reduction and stay with 11.5 - 11.2 AFR's and regular use of a good fuel cleaner to avoid carbon buildup. I've always found gas to be less expensive than pistons and valves.
I'll take the 3%-5% power reduction and stay with 11.5 - 11.2 AFR's and regular use of a good fuel cleaner to avoid carbon buildup. I've always found gas to be less expensive than pistons and valves.
Is this what you have done? Have you installed a wide band and then made sure that you get that target AFR the instant you hit the throttle? Is this possible with the stock ecu tuning avail? If so, please elaborate, because I would like to do something close to the same, but something more like 11.5-11.8 afr's. I would specifically like more information on the tuning software.
Is this what you have done? Have you installed a wide band and then made sure that you get that target AFR the instant you hit the throttle? Is this possible with the stock ecu tuning avail? If so, please elaborate, because I would like to do something close to the same, but something more like 11.5-11.8 afr's. I would specifically like more information on the tuning software.
The experienced tuners can get you "in the range" with a "box tune" based on the engine setup which is what I have done. Last time I check my AFR's indicated to be 11.6 after installing SLR injectors which was about 5 years ago. Of course, serious racers wanting every last HP available all work with wide band AFR's. Jerry Thornton has my ECU at the present time to take a look at the current tune I had done from a German tuner after the new injectors were installed. Since I recently changed my VRP headers to Eurcharged we may want to modify the tune.
I will say this, the day I switched to the 6 port SLR injectors (I know they're expensive) they provided a astounding improvement in performance. Spray pattern is very important. These injectors are also easily contaminated, so a sterile environment is critical.
Well, HUGE apologies. Those were NOT Autozone filters. They were K & N. They just didn't have the red oil on them, so my quick visual looked like white paper filters. SO.. the Dyno number does indeed include Aftermarket K & N filters. Even more interesting is to look in another thread I am making. The Filters really aren't worth much in power anyway. The actual restriction is our stock Air box - at least when combined with my (any) 82mm T.B. The write up with proof will be in another thread that I guess I will call...... um..... Intake comparisons on the dyno.
05-31-2016, 03:03 PM
