austinholloman

Here is the reply I got from the guys over at HPS-


Communication deleted at OP's request


So what do you guys think? Doesn't sound bad to me... Who wants to join me and build a beast?!

austinholloman

jturkel

lol. absolutely requires ECU tuning.

austinholloman

Then why would he say it doesn't?

jturkel

beats me. you don't throw on a S/C on a N/A car and claim a 100hp gain (granted not at the wheels and rather at the crank) without tuning. you have to adjust fuel and timing such. To be honest, you probably don't even get 100 hp without the tune and without the upgraded fuel system

austinholloman

Seems pretty odd that he would claim that right? Im going to reply and ask how that could be possible? Besides, who wouldn't go for the extra $500 and get the tune with the fuel system upgrades? I wouldn't want a supercharger on my car with out them.... Maybe he knows something I don't. Will find out.

jturkel

and i wouldn't believe that 100hp claim without a dyno sheet proving it. i'd ask for a dyno sheet.

austinholloman

Ha- Funny you just said that. I just clicked send on a dyno sheet request! If he has one showing these gains, I think its a pretty good deal. $5k for a 100hp and torque would be very nice, if its true.

ECTurboGSX

Actually, NitrogenBalance had that set up and Silence has a modified version of that set up. Maybe both of them could chime in. I believe they used some kind of signal modifier for the MAF and then used a fuel pressure regulator that increased the pressure with the boost level.

amdeutsch

You might also want to STFF MBWorld for previous posts on HPS and the experiences from members.

Saaboteur

There's some pretty acrimonious stuff here:

http://www.benzworld.org/forums/merc...-liter-v8.html

C43AMG

+ 1.....

austinholloman

Communication deleted at OP's request

RANDY_P

One thing is for certain, I would never take my car anywhere near ANY of those shops in that thread.

Any of 'em. THey all are dumbasses.

Saaboteur

Here's another thread on HPS, with a bunch of negativeness:

https://mbworld.org/forums/w210-amg/...arged-e55.html

FLYNAVY

Didn't one of those guys grenade their motor as well? Can't remember the details, but I do seem to remember it happening.

Using a piggyback fuel unit is a serious band-aid, that I would not expect from a $5k kit. HPS got a pretty bad rap when it was doing a lot of business tuning m113's (mostly w210 E430's and such), so I'd be interested to hear what folks have to say today, who went with their product. It's been a good 5 years or so since I've heard much about them with these cars, and I'd imagine that there are some experiences to share re: longevity. It is certainly the cheapest option (kitwise) that I'm aware of, so it has that going for it at least

silence

my car works well- the HPS designed brackets are where it's at... not much else is left from the kit on my car though. For good reason too.

I haven't been around too much for a while, but last I checked there weren't any decent tuning options for a "real" tune either. I spent a lot of time on the phone with a couple of the "best" options out there and came away with the feeling that I was safer with my own (non-ecu, just fuel pressure and maf scaling) dyno tune.

nitrogenbalance blew up after some issues with methanol, don't know what kit he used. I have an alcohol injection systems kit that I picked up from the Mustang forum (actually a lot of the parts on my car were originally mustang aftermarket parts- fuel pump, fpr, intercooler etc.)

appatula

Silence,
Quick question. Seeing as you and nitrobal are the guru's in this field are there any "easy" ways to modify the stock ignition timing? Or do you compensate with alcohol injection ect. From what I scraped up over the past two years the M104 it is next to impossible to modify spark without going full stand alone, I assume thats the case for M113's as well?

silence

yes, no adjustment

dont' trust any of the so-called "tuners" to adjust it either- call them and talk to them a bit and you find out they are complete idiots. Or perhaps that they are just trying to screw people by pretending they can actually tune these cars and they aren't idiots... reglardless, My local tuner doesn't have access to software that will do anything with the car.

appatula

Silence, thats exactly what I thought. Thanks for the heads up.

RANDY_P

+1000

Most of these guys learn as they go. that's the reality of the matter.

rjp

silence

I don't want anyone to think I wouldn't recommend the HPS kit though either- for what I picked mine up for used (around $2400 if I remember correctly) it is a great start towards building an awful fun car...

Just understand that the directions suck (and are wrong at various points) and that you will have to take 'ownership' of every step of the process and live with the consequences.

I have cut things, hammered things and rerouted things that most people wouldn't want to touch on this car.




EDIT- I'm in no way a Guru! I'm just a guy who had enough time to spend to figure out how to make it work. I actually know very little and honestly barely even own the necessary handtools for regular maint. type stuff.