So i finally had a chance to dyno the car today and i was more than happy with the results.....
Thanks to 09cobaltss1 for the tune car feels great now... my 1st pull was 380 whp with 350ish tq then he adjusted a couple things on the dyno and we got this..... I was really happy with 380 but he knew we can get to 400 no prob so i let him work his magic and 1 pull later we get this

efr cobalt ss dyno pull - YouTube

410whp and 380tq!!!

 

411whp/380wtq??

what needed to be adjusted to make better numbers???

 

Well he was running a conservative tune at the time so im assuming he made it more aggressive, added a little timing and boost and gained an extra 30 hp and tq... great graph by the way nice and smooth... we still need to see if we can adjust the wastegate but this is perfect for me right now.. Im more than happy with how the car turned out. exactly wat i wanted

 

Is that Tune on Pump Gas or E85? If thats on Pump then thats Impressive! I want those similar numbers when I get either the EFR or WR-2. 400WHP or BUST lol.

 

Pump gas with meth, but hes not going to crazy, im not trying to get that much out of the car now, its my daily driver that i use every day i dont want to f.uck up my tranny, so hes just doin wat i ask of him haha. but he just wanted to break 400 on my car and he did it easy. after the dyno we brought it back down a little bit lol

 

So I'm kinda confused about your post. Is 411whp/380wtrq disappointing for what you were expecting or right on? lol

At the moment the tune still isn't all out BUT his wastegate does need to be adjusted because I can't get anything more than 25.5psi out of it so there is still more power to be made for sure, especially if he ever decides to install valve springs.

Yeah like ixxgh0stxxi said, it's on pump with meth. There is most definitely power left on the table at this point but he very wisely wants to keep in conservative to have a solid and reliable street monster.

Take a pic of the power graph itself and post it my man.

I'm sure there will be a few people with something to say about the "slow spool time" of course though. Those are also the same people that don't understand the idea of boost ramp in and seem to be busting James' ***** about the slow spool time as well..

 

So are you saying that the spool time isnt as close to stock as originally thought? I was under the impression that the EFR had basically stock spool.

 

No no.. The turbo can and will spool up almost as fast as the k04 but only IF made to do so. Making a 6258 spool right to 25psi at 3k is just not a good idea imo. You're just asking for issues all around. Plus there's something to be said about making "usable" power

 

Sub

 

sub'd

 

Thanks lol well said... I know alot of people will say y put a bigger turbo if u wont push the car to the max?? i dont wanna be that guy thats car keeps breaking, like u said reliable which is what i have so far..

 

Great useable power band right there. I personally believe all tuned stock turbo cars should have some form of a boost ramp to get rid of that terrible spike in the midrange.... It's how I've always done it. I don't think it should be any different with a fast spooling aftermarket setup either. Nice work gents.

Happy to see SAE numbers too

 

Looks slow.

Kidding aside. Great numbers guys. I thought it was a 6758 not 6258?

 

I need to look further into this, your original numbers would be perfect for me, 380whp without transmission eating torque.

 

Lol thanks and yea its the 6758

 

Does he have 3bars by chance? If so good if not are you guys reading boost by his boost gauge? And also these aren't bad numbers. I'd say decent considering the factoring of the turbos size. Good job

 

I have a question about the fueling. Is it normally that lean with 93/meth? I know on E85 I am pretty lean but I am not as lean as he is (just by looking).

Here is my sheet on 24.5psi E47

 

Antone, I didn't even look at that lol good catch. to me I wouldnt lean it out that much cuz it is quite lean but I assume it was for numbers

 

I think you are doin a good job..The numbers seem about right, but all dynos are different like we all know, and yours may be reading a little lower than the next one...Since he is on E, is it possible to be at the 450whp mark safely??? Hows the driveabilty and power to you?

 

lol.... **** my bad. I didn't realize I type that..

Absolutely. That was one of the things I insisted on him getting before I started tuning the car. With the quick spool of the turbo I wanted to be absolutely sure that I can see any potential boost spikes and obviously have far more accurate boost logging.

Nice! Your power curve looks almost identical to how I have his setup. I'd love to see what his numbers would look like on e47.

Yeah the dyno wideband was registering pretty lean for whatever reason, but the car wb in my logs from the dyno pulls were showing the commanded .86 lambda I have it set for. His wb is brand new as well so I'm pretty confident that the logs are accurate.

He's actually not on any sort of e-blend (well e10 of course but you get what I mean.. lol). He's on 93 with meth right now, but yes I'm pretty confident that we can hit right around 450whp if the op ever wanted.

 

oh, i thought he was on e...great numbers then....i've noticed that most are getting the upgraded map sensors when doing a turbo swap, and u explained why above...thanks..lol

 

was that a 3rd gear dyno? nice numbers btw. Im impressed!

 

Yes sir yes sir. All pulls were done in 3rd.

 

Not that it matters lol i was just curious. I did my dyno's in 4th

 

I thought about doing one of the pulls in 4th just to see if more power could be made by loading up the engine more but said screw it. How much power are you putting down with your treadstone setup again?