Viper1000

Was just reading about the Softronic ECU tune for the N/A cars and they're claiming a 30 HP / 31 TQ increase. SOUL performance is offering them for $1195 and wondering if anyone has done this upgrade to their car? I am running a full SOUL exhaust (headers/exhaust) and can certainly feel the difference but wondering if I should do the tune for even better performance?

Softronic

Hello,
There have been many people that have tuned this car and ones all the way back to the 964 with Softronic and have liked it. A quick search may help in finding more information and others may chime in. You can always call me also.

Best,
Scott

rensoyka

my guess is that the gains you have felt with the hardware changes will double with the addition of a tune. so if you picked up 30 hp from the header/exhaust expect another 30 with a tune, for probably a lot less than the steel.

Wolpertinger

I have a Softronics tune on my 991.1 C2S. I really like it. Definitely peppier. I installed it after a few months with the Soul Street Performance Headers. I'd do it again.

Viper1000

Thanks, yeah thats what I have are the SOUL 200 cell cats with the valved exhaust. Love it! definitely feel the gains in midrange for sure......I guess I might have to buy myself a early Christmas gift...LOL

Viper1000

Scott - any discounts for Christmas?

RennListUser01

Pretty amazing ... total of 15% more power because of different exhaust tubes and different ECU settings!

Seems odd that Porsche wouldn't have done this.

SlighlySlippery

I've contemplated this setup for my 991.1. The full Soul exhaust with headers would cost $11k with tax, plus an estimated $3k to install (apprx). Another $1,400 for the tune. Is 60hp worth $15,400 if you're not tracking the car?

RwdConnor

There is 3k in savings if you have a 100pc tool set!

In all seriousness, 60whp gain on a NA car is alot. Nothing like a turbo but 16k could get you the Supercharger kit for the 3.8. Just saying

RennListUser01

Yeah, probably not real hp on an NA car ...

desmotesta

As someone who has had both softronic Tune and Soul Catted headers on my 991.1 GTS, I can attest that even on a "heavy" 3300 pound car, I was able to fully appreciate and enjoy the gains I got from Just the Soul Headers.

Your assumption of 60 HP is not far from what you can expect with all mods in your list, just remember that the 50-60 HP gain will not be "peak gain". The real addition will be in mid-range, but thats not a bad thing. Between 2500-5500 RPM, my GTS drove like a car with real 40+ HP/TQ gains. ( AGAIN, NOT Peak, but mid range, Dyno charts even from Soul show most gains in mid range and Not Peak, and that is what I experienced )
N/A cars have Amazing throttle response already, but adding Soul headers took that to another level.
Anyone looking for all out power and straight line speed, ditch all of these cars and get yourself an EV... but if you want to experience the 911 the way it was always meant to be, adding 40-60 RWHP in mid-range will transform your car. Provided you are a die hard N/A enthusiast, like every Porsche was from inception to 2016, these gains will be more than enough to keep you happy for a long time.

DC911S

No way you get 60 HP, from a 3.8 liter motor already making 400 HP with a tune and headers. Maybe if you did pistons to raise the compression ratio AND new cams to add more lift with a tune of course to cut the timing......AND race gas,....you might. Then it'll be stressed out and won't last many hours.

mhconley

Two years ago I purchased a C2S cab with a full Soul exhaust installed by the previous owner: long tube competition headers (no cats) and a valved exhaust. It also had a Cobb tune on it (including a PDK tune). I noted Soul recommends Softronic and called them to talk about why. After that discussion with Soul I contacted Softronic and purchased a 93 octane tune for my car that defeated the CEL I was getting from the O2 sensors. I removed the Cobb tunes and sold the unit, and installed the Softronic tune. Scott recommended I remove the PDK tune as they can damage the transmission. The shifts are much smoother without it. He estimated my car is making between 440 and 450 HP. I am very happy with the performance and the Softronic tune. Scott has always been very responsive to emails and his 40 years of experience tuning Porsches for the street and track tell me he's doing something right.

Martin

RennListUser01

It seems what is needed, in each case of mods, to assist in determining truth - a pre mod dyno run, perhaps for each component of any mods.

I certainly understand how increasing boost, larger injectors, bigger tubes makes a difference ... seems like the boost increase is, by far, the largest contributor, though. On an NA engine that is already designed to obtain really high output, changing little things like tubes and timing should not massively increase power - now, if injectors are replaced, compression ratio changed, ECM modified, etc, then certainly more power. But in this later case, this isn't just a tune with headers.

I'm still in the camp of logic that says if you wanna have a lot more power, buy the lot more power car so that everything is generally matched to that lot more power - internals, turbos, oiling, cooling, etc. Put your money there vs minor mods that are sooo expensive.

desmotesta

We should all also remember that Dyno sheets, Spec sheets, Manufacturer claims .. All are pointless without real world experience and feedback from End users.

A dyno sheet May show 20HP addition between 3000-5000 rpm, but if the end user cannot "feel" much of a difference, that added HP is just a number on the sheet.

Speak to those who have done these mods, and gather feedback.

Having run the entire circle of cat back mufflers, Catted Headers, cat-less headers and tunes, I can unequivocally confirm that the ONE mod that truly delivered real, noticeable and advantageous HP/TQ increase was the Headers. Adding Exhaust to Soul headers may deliver a handful of unnoticeable ponies butt the Headers will give you real, usable HP and TQ where we do 90% of our driving.

And Like it was mentioned above, most DIYers can do this mod themselves in about 2 hours.

Hope this helps