Hi guys, new to this forum

im about to order the fabspeed maxflo mufflers and fabspeed competition air intake system for my 997 C4S.

Just wondering if anyone has had any experience with these mods?

Main issue is that i do not want to lose any low-end torque as i wont be driving it above 4000+RPM often. I like the stock accelleration and throttle response but iv heard aftermarket parts would reduce the low-end torque? anyone shed some light on this thanks

 

i have a k&n intake with fabspeed mufflers, cats, and headers. no loss in throttle response or torque.

 

Sounds awesome!

 

I had Fabspeed install the Maxflo Mufflers and the xpipe.
Did not notice any loss.
But if you don't go over 4k rpm's, then you will not enjoy the sound.
4 and above is sweet!

 

Fabspeed is what my indy recommends. Good products.

 

Why the hell would you make a statement like "I will not go above 4k?" Please sell your car to someone else that will drive it.

To your question, I have Fabspeed Maxflo exhaust on my C4S cab. Sounds great at all RPM. Great power too. I did not feel the need to change the very well designed Porsche intake. I did plug the resonator and the sound was much improved.

 

What pries have you been quoted for the mufflers plus install?

 

1) Gundo Mod
2) CAI
3) Enjoy new sound!!

I thought about the Maxflo mufflers myself. My indy, FD Motorsports, who also does the Fister muffler mod ( Gundo ) told me that in his experience the mufflers do not add enough for the money.

With the CAI and the Muffler Mod...anything above 4500 RPM is the greatest sound ever!! I'm also running up the gears to hear the sweet sound of Porsche. Spend the money on a Softronic Flash on the ECU with the above two mods and #3 is even better!!

 

i have to agree with another poster here questioning you on the '4000 rpm' quote. what's the deal there? if you're not running at 5000+, you're not even experiencing these cars, as that's when they wake up and 'scoot'. 3-4000 is a nice area in the rev range and, in normal traffic, i typically shift at 4000 during my commute. but, if you're not driving the car in the 5-7000rpm your missing the whole experience. to each his own, i know, but there are plenty of cheaper cars to pose in.

 

one more thought - if you're going to simply baby the car almost all the time, why spend the money on 'performance' mods? simply gundo your mufflers and skip the intake. you're wasting your money on the intake (gives aural above 5000rpm) and the gundo will give you what you want for sound. i will have gundo'd cans for sale very soon - if interested. save your $$$ - seriously.

 

I live in hong kong and with all the traffic/cameras round here, theres only a small chance i would drive it at high speeds. Of course i can drive it at 4000+ rpm with low gears but i dont think that is necessary.

My main question actually is what would actually increase torque at the lower end?.
I installed both the mufflers and CAI and noticed a drop in low end torque.
(also the acceleration and feeling of chair pushed against ur back)
thats mainly what im also lookin for and on the stock it definitely feels like its accelerating faster :S any ideas?

 

i had the maxflo mufflers + CAI + install for around 2300$ USD

 

I'm somewhat surprised to read that you feel less low end torque after just installing fabspeed mufflers and the cool (warm) air intake. The new mufflers might be less restrictive than the stock mufflers, but, you still have the much more restrictive stock catalytic converters upstream from the mufflers. So, the mufflers should have little affect on the torque. If you had upgraded to 200 cell cats, then you would probably have reduced your low end torque.

If you feel like spending more money, get an ECU tune (Softronic, EVOMsit, ...). It might improve the feel of your car.

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What is the cost of softronic tune on a 997.2? I assume you think it s a noticeable mod?

 

I don't have a 997.2S, so I googled it and I found that you can buy it from Vivid Racing for $1,250, which includes a Durametric enthusiast version. Other 6speed sponsors sell it, but Vivid is involved in the transaction. After you receive the Softronic kit, you connect your laptop to your OBD-II port, download your current ECU program, fill out a form (including a description of each of your intake, engine, and exhaust mods if any as well as the octane of the gas that you use), then you upload the info to Softronic via the Internet. A few days later Softronic will email the new ECU program to you (as well as a copy of your current ECU program). Then connect your laptop to your OBD-II port and load the new ECU program.

In my situation, the Softronic ECU tune together with the other other engine mods that installed made a noticeable improvement. I didn't have any dyno tests done.

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