There are now over 20,000 miles with my @pressertech tune. All trouble free, on stock plugs at stock Gap. I pulled two plugs this past weekend and they look great. Throttle response is awesome, shifting couldn't be better, and my mpgs of 29-32. @80mph on the interstate are amazing. I average 21mpgs in the city.
Haha I think we all know what you mean but those typos made me laugh! This tune is very appealing. Any advancements on a CAN-BUS flash? The only thing holding me back is having to send my ECU to them.
Update: Couldn't be more pleased with the Presser tune. 5K on stock plugs and nary a hiccup. Runs so strong on 91 that 98's rendered moot. As a former owner of M3 and Z06 I'm still shocked at the power this thing makes. Also, just took a rip in a 2017 RCF and was totally disappointed. Cheap cramped interior and just uncomfortable in general. Great sounding engine that pulls hard, but has nothing on a Pressertech Stinger. Our beloved Stinger is one special car gentlemen.
Haha I think we all know what you mean but those typos made me laugh! This tune is very appealing. Any advancements on a CAN-BUS flash? The only thing holding me back is having to send my ECU to them.
There are now over 20,000 miles with my @pressertech tune. All trouble free, on stock plugs at stock Gap. I pulled two plugs this past weekend and they look great. Throttle response is awesome, shifting couldn't be better, and my mpgs of 29-32. @80mph on the interstate are amazing. I average 21mpgs in the city.
What I learned from the Toyota 1GR-FE is the factory tune enriches the fuel mixture significantly to keep the primary cats cool and essentially dumps fuel out the exhaust. All this with the goal of lower emissions, sacrificing power and mileage.
Is the mileage improvement you’re getting the result of deactivating a similar feature?
A rich mixture heats a catalyst up, not cools it. In turn, that would make the catalyst more efficient (to a point).
Factory tunes are designed to work in all temperatures and at all altitudes for any driver in any of the cars they stick it in. When you're less worried about achieving that goal, you can improve on efficiency.
Dang, thanks for the update! I just assumed this thread had died and everyone forgot about it.. So did you just send your ECU to them and have them flash it with their canned tune, or did they whip up a custom map just for you? Did the throttle response change or get wonky, or does it feel nice and smooth like stock? You said OEM plugs, are they gapped? Any other upgrades you have on the car?
Yes I sent my ECU to Scott. He's a consummate pro and the turnaround was lightning fast. Shipping cost me a king's ransom but was so pumped I decided to pony up. Was neurotic about the plugs but after consulting with Scott, placed my faith in his advice. So the stock plugs with stock gap (running on Shell 91) are performing exceptionally well. It's not a custom map per se, because the stage 2 tune offered everything I wanted---slightly improved throttle response, effortless acceleration, brilliant shifting, and 31 mpg mixed. In a word: optimized. Kia should align with Pressertech as BMW does with Dinan. My bimmers were Dinan tuned and the effect, while not as dramatic as the Stinger's transformation, were impressive nonetheless.
If I'm reading this right it's a 90+ increase in hp and a whopping 146 tq? that's pretty darn good. I thought I read on an older pressertech thread a much lower increase...
A rich mixture heats a catalyst up, not cools it. In turn, that would make the catalyst more efficient (to a point).
Factory tunes are designed to work in all temperatures and at all altitudes for any driver in any of the cars they stick it in. When you're less worried about achieving that goal, you can improve on efficiency.
It’s a feature called Cat Over-Temp (COT) protection. The evaporative effect of the extra fuel cools the cats and saves them during WOT events. Some tunes will go so far as to increase the AFR to around 10 and close the throttle according to the temp reading its set to activate at.
If I'm reading this right it's a 90+ increase in hp and a whopping 146 tq? that's pretty darn good. I thought I read on an older pressertech thread a much lower increase...
Well, it's not quite as simple as that... If you look closely at the dyno sheet you'll see that the peak HP of the baseline is actually around 330whp. It's just at the point they measured at there is a 90whp increase. So yes, at at least one point in the powerband there is an increase of 90whp, but peak numbers only show about a 60whp increase.
Well, it's not quite as simple as that... If you look closely at the dyno sheet you'll see that the peak HP of the baseline is actually around 330whp. It's just at the point they measured at there is a 90whp increase. So yes, at at least one point in the powerband there is an increase of 90whp, but peak numbers only show about a 60whp increase.
dumb question, so if peak is ~60 whp increase why do they quote the 90whp increase and what's the difference? I'm trying to decide between tunes and have a local reputable tuner that I'm trying to research.
dumb question, so if peak is ~60 whp increase why do they quote the 90whp increase and what's the difference? I'm trying to decide between tunes and have a local reputable tuner that I'm trying to research.
This is why Dyno numbers can be decieving if you only look at peak hp/torque. Let's say we have 2 cars on a Dyno same car different tune same hp 400 at 6.5k rpm. The difference is one car is making 250hp at 3.5k rpm the other is making 325hp at 3.5k rpm. Yes the both max at 400hp but the one making 325hp at 3.5k would smoke the other car because of the difference in the power curve. That's the reason that even with less whp a ecu tuned car can possibly run faster times in the 1/4 mile or 0-60 thanta piggyback may run. It's not the peak hp it's how the ECU tune can adjust the hp and tq curve. Hope that makes sense.
This is why Dyno numbers can be decieving if you only look at peak hp/torque. Let's say we have 2 cars on a Dyno same car different tune same hp 400 at 6.5k rpm. The difference is one car is making 250hp at 3.5k rpm the other is making 325hp at 3.5k rpm. Yes the both max at 400hp but the one making 325hp at 3.5k would smoke the other car because of the difference in the power curve. That's the reason that even with less whp a ecu tuned car can possibly run faster times in the 1/4 mile or 0-60 thanta piggyback may run. It's not the peak hp it's how the ECU tune can adjust the hp and tq curve. Hope that makes sense.
The phrase 'area under the curve' is often used. After all, for the same car and drive train, it's just about transferring energy to the vehicle. The tune with the larger area under the curve transfers more energy in total, therefore, aside from a few other factors that sometimes interfere, it would win.
Generally, the lower in the RPM range that this area difference exists, the greater the overall effect. A difference in the curve from 6500 to 6700 RPM will rarely make much of a difference in everyday driving.
There's an old post on the 370z forum where someone used 1/4 mile times between two 370s that had near identical dyno peak WHP but differing power curves due to mods and basically proved that area under the curve is what makes cars faster. I'm sure that's not the only instance, but the idea stands. Peak HP isn't everything. I'd almost call it secondary to gains across the powerband for most situations.
If I'm reading this right it's a 90+ increase in hp and a whopping 146 tq? that's pretty darn good. I thought I read on an older pressertech thread a much lower increase...
No, they’re not anywhere close to those gains and they’re actually being a little deceptive with their hp/tq comparisons.
Their 459hp/522hp vs 365hp/376tq is an untrue comparison because they are using Kias very underrated factory numbers. Their own dyno and tons of others dynos proved about 395hp/460tq=335whp/390wtq from a completely stock Stinger.
Their actual dyno comparison for the Stage 2 tune shows gains of only 59whp/56wtq and that’s with K&N high flow intakes. A piggyback Stinger with only intakes & 91 octane fuel gains 89whp/123wtq or 113whp/128wtq with octane boosters/e30. That’s about double the power gains at half the cost.
This is actually a very mild tune because Kagantuned’s Stage 1 ECU tune gained up to 94whp/134wtq with absolutely no other performance mods. He expects about 430whp+ after adding intakes, and his tune only costs $750(Kia Stinger GT 3.3TT Stage 1 Tune)
Don’t get me wrong, Pressertech is a very reputable high quality tuner, but the facts show that their tune is the most conservative & lowest powered options available at this time.
