X pipe and performance chip questions
11-06-2013, 03:55 PM
#1
Advanced
Thread Starter
X pipe and performance chip questions
I keep reading about members installing the x pipe and performance chips for a power boost.
What exactly does the x pipe do and who sells it?
Who sells performance chips and what is to expect?
The car is a 1986.5
Thanks in advance.
What exactly does the x pipe do and who sells it?
Who sells performance chips and what is to expect?
The car is a 1986.5
Thanks in advance.
11-06-2013, 04:02 PM
#2
Rennlist Member
X-pipe: Roger at 928srus.com
Chips: Porken S300 at liftbars.com
expect greatness.
Edit: here is a thread on the chips porken's chips
Chips: Porken S300 at liftbars.com
expect greatness.
Edit: here is a thread on the chips porken's chips
11-06-2013, 04:07 PM
#3
The x-pipe allows the engine to breathe better over the stock H-pipe. Also gives the car exhaust note justice to its V8 engine. Coupled with Hi-Flo cats, you can't go wrong with this performance enhancement. It's a must. Made by Dave Lomas at Motorsports LLC. Sold by Roger at 928Rus and Carl at 928 Motorsports.
S3000 chips made by Porken. The best performance chips for the S3s.
I believe with X-pipe, S300 chips and hi-flo cats you can expect about 300+ or around hp to the wheels? Forgot the torque, probably the same. It'll turn the 86.5 into a real beast. I've got the x-pipe and hi-flo cats installed and I'm already loving the gains and feel. Still need engine and transmission work before I install the chips.
S3000 chips made by Porken. The best performance chips for the S3s.
I believe with X-pipe, S300 chips and hi-flo cats you can expect about 300+ or around hp to the wheels? Forgot the torque, probably the same. It'll turn the 86.5 into a real beast. I've got the x-pipe and hi-flo cats installed and I'm already loving the gains and feel. Still need engine and transmission work before I install the chips.
11-06-2013, 06:05 PM
#6
The x-pipe, 87 FPR and chips will transform your car.
For me the best feature of the chips is the removal of the fuel dump, so less engine braking and quicker response when get off and back on the throttle.
But yes as per above, get your top end, plugs, wires, caps and rotors sorted first to maximize the chips.
For me the best feature of the chips is the removal of the fuel dump, so less engine braking and quicker response when get off and back on the throttle.
But yes as per above, get your top end, plugs, wires, caps and rotors sorted first to maximize the chips.
11-06-2013, 06:46 PM
#7
Rennlist Member
Make sure your fuel system is sorted. I had original fuel dampers and although they were not leaking fuel, they deteriorate and do not work the way they are designed.
The difference in the car is dramatic; particularly above 5,500 rpm; there is an additional enhancement that brings red line to 6,720; which means you are hitting almost 80 in second gear...and be careful...if you do a full throttle upshift into 3rd, she will jump like someone kicked her.
A major upgrade is the flattening of the torque curve...a lot more of the torque is available much lower, and it lasts longer..the car has much more oomph in top gear at 60 mph...if you are so inclined to use 5th at that speed.
The difference in the car is dramatic; particularly above 5,500 rpm; there is an additional enhancement that brings red line to 6,720; which means you are hitting almost 80 in second gear...and be careful...if you do a full throttle upshift into 3rd, she will jump like someone kicked her.
A major upgrade is the flattening of the torque curve...a lot more of the torque is available much lower, and it lasts longer..the car has much more oomph in top gear at 60 mph...if you are so inclined to use 5th at that speed.
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11-10-2013, 09:05 PM
#9
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Greetings. I have an original Dave Lomas X-pipe that I've installed on my 86.5 S 5-speed, my 89 s4 5-speed and 90 s4 (automatic), and currently have sitting in a storage closet. In my experience the X-pipe unequivocally increases torque/horsepower in the middle and upper part of the rev range. With Porken's chips, my 86.5 dyno'd at more than 270 peak hp. But there is a price to pay in terms of reduced torque at low RPM. My first trips to the dyno were to capture not the increased peak power but why it felt so soft right off idle. Many, and probably even most, don't notice the difference. But if you like your motor to pull from right off idle, you'll notice, and not favourably.
I'd purchased the 86.5 with the X-piple already installed and tried a lot of different things to figure out why it felt so weak at the low end, even changing the gearing. But it was swapping the X-pipe around to all my different cars that provided the answer. I enjoyed the extra top-end on each of those cars, but ultimately preferred the stock exhaust for day to day drivability. When I had the chance to regularly wind out the motor, I found it a lot more satisfying to have the exhaust configured with the X-pipe. That's how I'll have my weekend or track or second car configured. But not my daily driver. My point is that depending on how and where you drive, there is a negative trade-off with the X-pipe that may or may not be an issue. And that you can take it on and off to suit conditions.
As for Porken's chips, just like everyone else noted you'll want to make sure everything is in good running condition, but they really make a big difference. And I can say its been great doing business with him on the chips - for which he's answered dozens of my questions - and myriad of his other clever products. I have his lift bars, timing tool, clutch stop, tensioner, etc. etc.
Good luck
I'd purchased the 86.5 with the X-piple already installed and tried a lot of different things to figure out why it felt so weak at the low end, even changing the gearing. But it was swapping the X-pipe around to all my different cars that provided the answer. I enjoyed the extra top-end on each of those cars, but ultimately preferred the stock exhaust for day to day drivability. When I had the chance to regularly wind out the motor, I found it a lot more satisfying to have the exhaust configured with the X-pipe. That's how I'll have my weekend or track or second car configured. But not my daily driver. My point is that depending on how and where you drive, there is a negative trade-off with the X-pipe that may or may not be an issue. And that you can take it on and off to suit conditions.
As for Porken's chips, just like everyone else noted you'll want to make sure everything is in good running condition, but they really make a big difference. And I can say its been great doing business with him on the chips - for which he's answered dozens of my questions - and myriad of his other clever products. I have his lift bars, timing tool, clutch stop, tensioner, etc. etc.
Good luck
11-11-2013, 11:06 AM
#10
Advanced
Thread Starter
Greetings. I have an original Dave Lomas X-pipe that I've installed on my 86.5 S 5-speed, my 89 s4 5-speed and 90 s4 (automatic), and currently have sitting in a storage closet. In my experience the X-pipe unequivocally increases torque/horsepower in the middle and upper part of the rev range. With Porken's chips, my 86.5 dyno'd at more than 270 peak hp. But there is a price to pay in terms of reduced torque at low RPM. My first trips to the dyno were to capture not the increased peak power but why it felt so soft right off idle. Many, and probably even most, don't notice the difference. But if you like your motor to pull from right off idle, you'll notice, and not favourably.
I'd purchased the 86.5 with the X-piple already installed and tried a lot of different things to figure out why it felt so weak at the low end, even changing the gearing. But it was swapping the X-pipe around to all my different cars that provided the answer. I enjoyed the extra top-end on each of those cars, but ultimately preferred the stock exhaust for day to day drivability. When I had the chance to regularly wind out the motor, I found it a lot more satisfying to have the exhaust configured with the X-pipe. That's how I'll have my weekend or track or second car configured. But not my daily driver. My point is that depending on how and where you drive, there is a negative trade-off with the X-pipe that may or may not be an issue. And that you can take it on and off to suit conditions.
As for Porken's chips, just like everyone else noted you'll want to make sure everything is in good running condition, but they really make a big difference. And I can say its been great doing business with him on the chips - for which he's answered dozens of my questions - and myriad of his other clever products. I have his lift bars, timing tool, clutch stop, tensioner, etc. etc.
Good luck
I'd purchased the 86.5 with the X-piple already installed and tried a lot of different things to figure out why it felt so weak at the low end, even changing the gearing. But it was swapping the X-pipe around to all my different cars that provided the answer. I enjoyed the extra top-end on each of those cars, but ultimately preferred the stock exhaust for day to day drivability. When I had the chance to regularly wind out the motor, I found it a lot more satisfying to have the exhaust configured with the X-pipe. That's how I'll have my weekend or track or second car configured. But not my daily driver. My point is that depending on how and where you drive, there is a negative trade-off with the X-pipe that may or may not be an issue. And that you can take it on and off to suit conditions.
As for Porken's chips, just like everyone else noted you'll want to make sure everything is in good running condition, but they really make a big difference. And I can say its been great doing business with him on the chips - for which he's answered dozens of my questions - and myriad of his other clever products. I have his lift bars, timing tool, clutch stop, tensioner, etc. etc.
Good luck
Right now I am still working on the vacuum issue. I have it up to 17.5 on the mightyvac...gonna take it to a local shop that has the smoke generator as I have reason to believe that the system still has a leak.
11-11-2013, 01:45 PM
#11
Drifting
mdss6, you are the very first person in several hundred customers that has commented on a low rpm power loss. I do not know what configuration you are using but if you look at the dyno sheet in the thread below you will notice that I start the dyno runs at 2k rpm and it has significant gains beginning there. I fought long and hard to develop the crossover to have gains in the driveable portion of the rpm range and still have about a dozen prototypes that didn't make the grade. Anybody can make gains in the high rpm range, even Magnaflow. If you are worried about gains lower than 2k rpm, you are driving the car like a diesel truck.
You do have my interest though, the next time I am on the dyno I will do a pull from idle just to see what transpires.
https://rennlist.com/forums/928-foru...ipe-again.html
You do have my interest though, the next time I am on the dyno I will do a pull from idle just to see what transpires.
https://rennlist.com/forums/928-foru...ipe-again.html
11-11-2013, 01:57 PM
#12
Drifting
BTW, that run is with an 86.5' 5-speed that was otherwise totally stock without any fuel tuning. With Ken's chips you should be well above 270rwhp. You might have been on a really tight dyno or something else may be hindering your performance. I would suspect cam timing for a low bottom end but then you should have had a very strong top end.
The dyno sheets I have for S4's and GTS's all show linear gain from just off idle to redline. I have never seen a lower bottom end on any of the hundreds of dyno runs I have done with the x-pipe.
The dyno sheets I have for S4's and GTS's all show linear gain from just off idle to redline. I have never seen a lower bottom end on any of the hundreds of dyno runs I have done with the x-pipe.
11-11-2013, 02:34 PM
#13
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I have an 87 and a 93 fitted with the same X pipe and certainly did not notice any loss of power anywhere.
Interesting comment!
Interesting comment!
__________________
Does it have the "Do It Yourself" manual transmission, or the superior "Fully Equipped by Porsche" Automatic Transmission?
George Layton March 2014
928 Owners are ".....a secret sect of quietly assured Porsche pragmatists who in near anonymity appreciate the prodigious, easy going prowess of the 928."
Does it have the "Do It Yourself" manual transmission, or the superior "Fully Equipped by Porsche" Automatic Transmission?
George Layton March 2014928 Owners are ".....a secret sect of quietly assured Porsche pragmatists who in near anonymity appreciate the prodigious, easy going prowess of the 928."
11-11-2013, 02:52 PM
#14
Installed dozens of them and have never heard of anyone losing power down low. Quite the opposite in fact.
11-11-2013, 02:55 PM
#15
Rennlist Member
Did you know your website is down?