Just recently went from a GIAC flash to an EPL Stage 1 flash and am enjoying every second of it. I only have silicone boost hoses, diverter valves, and a custom 3" straight x pipe exhaust utilizing 93 octane. I had a stock exhaust and this set up sounds insanely good.

The car just drives better all around. With the GIAC tune the car was very on/off no matter what type of driving. The car still pulled very hard so nothing to take away from them. I would hit 1.0 bar with their tune.

The EPL tune just makes the car so much more enjoyable. Throttle response is instant and power delivery comes on smoother and pulls hard all the way to redline. I'm hitting 1.2 bar which i believe is the threshold for 93 octane on my set up. The car just cooks the tires in 1st gear and gets a little squirly in 2nd from a roll on. I plan on enjoying this set up as much and long as possible but turbos, injectors, and a clutch keep calling my name. The launch control feature is pretty fun as well, although i haven't launched it, sounds cool. lol I know there's a No Lift Shift option as well but i'm too wuss to try it out. And not for nothing the gas mileage definitely improved from before. I dont have exact numbers/data but the GIAC seemed to be on the rich side AFR wise.

I ended up having to ship out the ECU to them due to issues with flashing from my laptop but i got it back within a week. Getting access back their was a little difficult with gt3 seats and a heigo roll bar.

Thumbs up to Chris@EPL for great customer service as well and Tony for the superb flash. Their responses were prompt, detailed, and helpful. I look forward to modding the car more with them along the way. A lot of great shops/tuners but their literal proven track record and years of experience did it for me. Grateful to have that with this platform.

 

You're seeing 1.2 bar on K16s on pump gas? That's impressive (and high). I'm running a custom 100 octane Cobb tune from Sambo and occasionally see a spike to 1.1, but typically it's 1 bar with my stock wastegates well adjusted.

Were you able to do any datalogging ?

 

It was a cool night, i say 50 degrees. I pegged it a little in 3rd gear to check and saw 1.2 bar. Stock K16's on 93 octane. I have not done data logging.

 

My GIAC tune sees 1.1 regularly sometimes 1.2 in 4th gear or if it gets wheel spin.

 

I also left a GIAC/EVOMS setup for EPL a couple years ago and am very happy with it...fast and flawless- street or track, 0C to 40C temps

Cheers,

 

I see 1.1 to 1.2 on my EVOMS (GIAC) Stage II on 93 octane pump gas.

 

That's strong.

I went back and had a look at my Cobb datalog files. I did log a few 4th gear pulls that showed spikes of 17-17.9 PSI, which is around 1.2 bar. Interestingly enough, I don't even recall seeing 1.2 bar on my gauge.

 

The turbos are faster than the gauge

 

I get 1.2 bar at full throttle with Evoms stage 3, IPD plenum, headers, Speedtech 3.0 x-pipe with 100 cel cats, K24's and new Waste gate accuators.

Not sure of the tune but i would guess its an old Evoms or GIAC tune.

 

+1 The stock dash pressure gauge sucks. I measured the refresh time and it's around 1000Hz. This means you can let off the gas completely, and it may still read full boost for another 0.99 seconds.

Dan

 

But it's safe to assume that the log files are accurate, correct?

I don't get very caught up in watching the bar readout when driving around, I just want to drive the damn thing...

 

I'm only talking about the refresh rate on the dash gauge. I'm not sure what the Cobb logging refresh rate is, but I bet it's much faster than that.

Dan

 

datalog refresh is good with any tune on newer laptop...gauge is basic measure

 

+1

 

What should the max bar be if stock? I saw .9 once or twice, but not higher. .8 seems more common on WOT and just judging by the dash gauge.