Very nice! What was the a/f reading throughout the ban?

 

Here is what a RENNtech tune looks like with a 178 pulley, massive TQ. That TQ. can make all the difference in the world. She just rolled over 4,000 miles and I think it's starting break in & to loosen up . Yeah, I know the dyno #'s look low, but the car is still pretty d@mn fast.

 

Decent numbers Steve! But you need even more torque!!!!! If your interested let me know, I will cut you a deal!

 

They looked really good, I will print out another graph for you and post it.

 

I kind of wondered the same thing. I'm not a tuner, but I did stay at a Holiday Inn Express last night.... just kidding. But I do know some of the most important parts to keep the engine safe. I know my tune is pulling the timing & getting rich when it's hot and you are really getting into it. I know my car may not have as much torque as the one shown in your chart, but it is reaching max torque with in 300 RPM. I wanted a fast car with a safe tune, that's why I went with RENNtech, I know they are on the consertive side with a tune to cover their BIG NAME. I did talk to them after I had my car dyno'ed and they did say it was running a little on the rich side and offered to lean it out some, but they suggested to hook up a data logger to it to get some more info before I sent it back to them. I don't want to push it to it's limits and take a chance of BOOM.

Originally Posted by SRT6 Gang Member
Very nice! What was the a/f reading throughout the ban?

 

Damn!!! now that's a nice power band look at the TQ platue much better than the cheesy tune posted earlier, nice job RENNTECH And that's how it should look! notice how the HP graph follows a much more linear line than the other tune ,that takes alot of dyno time to perfect each Cell in the ecu map to look that clean.

 

Reaching max touque in 300 RPM's is probably how I can pull off the 1.7-60' 12.510 @ 111.62 with a lot lower dyno #'s than others running around the same times. But I'm not knocking anybody cars or tunes. But I would like to get it leaned out a little and increase the temp setting to get the timing not to start retarding at such a low temp, I'm sure it is set very consertive.

 

am i correct? you have a renntech tune and a 178 pulley and still only get 297 ft/lbs torque and under 300 hp? granted the lines look great but to have that done andhave such low numbersseems strange to me. my engine pulls 317 ft/lbs torque and 321 hp in stock form. granted my lines look a little ragged but my ecu doesnt care for dynos much. the reason i ask is mine was also done on a mustang dyno.

 

Uhh, you mean the reason you ask is that you wanna toot your own dyno results?

 

The tuning they do gets better and better. We have customers that got their tuning in the beginning and the newer (free) versions are good for 10-15 HP sometimes and a table like TQ curve. I test drive every car that leaves my shop and when you can FEEL a difference from a tune before it even adapts you know you made a substantial difference.

 

I was totally disapointed with the #'s when I had it dyno'ed, but the Mustang Dynamometer will put out lower #'s than most dyno's.

 

I cant speak for every LET/Eurocharged tune, but Jerry & Tony usually pull a little timing down low to get the car moving out of the hole and maximize traction.....then at 2500rpms dump all the timing plus some back in so the puts out max torque and sends the car sailing into 2nd & 3rd gear.It makes that kind of torque and horsepower numbers more usuable on street tires. Im sure if you specifically asked for the torque curve to start lower they would move it.

 

the pull was started a few hundred RPM later, enough said. Besides since when does this car see use below 2700 RPM? Does the Supercharger even ******* engage that low? Sorry I couldt tell ya, mine has Never seen WOT at 2700 RPM's. I mean seriously, people complaiing about a discrepency like that are flat out nut swingers looking for **** to pick apart.

I have dynoed thousands of cars and that's strictly a difference of starting a pull on the rollers a few hundred RPM off from the other pull.

 

no. the reason i ask is because if he spent big dollars for a pulley and a renntech tune lets say ballpark 1500$ and dynos less than a stock motor then i know what not to buy.

 

32krazy!, am I reading your post (above) correctly - you pulled 321rwhp & 317 rwtq, stock? That's a bit hard to believe... the VAST majority of M112 Kompressor motors seem to dyno in the 280ish range (give or take 10... but not 40). Those numbers would translate to around 390 hp at the crank, which is right in line with what's to be expected on a Stage 1 car.

You either have a factory freak motor, or maybe she wasn't stock - have you owned the car since new? Not uncommon for a previously-owned car to be modded, when you're talking SLK32/C32/SRT-6.

Anyway, JMHO.

Props to EC for a more aggressive tune than the competition, resulting in meaningful power gains to the OP's car. Should produce stout track results, I'd imagine.

 

as far as i know the car is totally stock. i know for sure all the pulleys are oem the airboxes are oem with k&n filters. as for a tune i wiould have to say stock because it shuts down at the limit of 155 mph
i posted the charts on another thread. "dyno results" i never expected these numbers just looking for a baseline before i installed the c3 and intakes
the tech that ran the dyno actually told me it would dyno at 290 hp based on the advertised m/b numbers of 349 hp. (crank). first pull was 304 so it is ahead of the curve from the start!

 

can you guys alter the timing + or -? If so is there a limit to how much you can advance timing or are you able to adjust it quite a bit in either direction?

 

Yes, we do and can easily alter timing depending on the situation. The limit persay would be at a cost as you would either dump fuel or starve her at different levels depending on how much timing is advanced or retarded. I personally had to change with my nos tune as it pulls 3-4 degrees when it runs, and run a seperate tune when on race fuel.

We have full control over most parts of the MAPS of the car, unlike a lot of tuners out there.

We will be posting a new tuning "challenge" out there in the next day or two whenever our sponsorship finally goes through.

Should get interesting! A fun time to own these cars!

 

While dyno numbers are interesting and good for tuning, they can be easily skewed to look real nice. Will part of this challenge include track times? I'll take a crappy dyno pull and great 1/4 mile run over a great dyno pull and average 1/4. I currently have a LET tune and I'm satisfied. I just installed the NW dual intakes and about to install a wideband before I install my NW mani's because I might start running lean up top. I say all that to ask if there are any issues with tuning the fuel with those mods and a 185 pulley? I remember 240 having problems with leaning out with similar mods and the 185.

 

If I have the LET V.2 tune, do I get your custom tune free? I'm a little confused on whom is responsible for tuning these cars. Thanks!