[rhudeboye]

<!--quoteo(post=80920:date=Sep 29 2009, 07:13 AM:name=DayDreamer)-->QUOTE (DayDreamer @ Sep 29 2009, 07:13 AM) <{POST_SNAPBACK}><!--quotec-->Just an observation. Since I put the chip in, the little kick at around 4000RPM has almost disappeared.

I assume this is because the power differential before the 4000RPM and at 4000RPM has been reduced minimising the jump in power.

Yes, No ?<!--QuoteEnd--><!--QuoteEEnd-->

The power is now spread out across the RPM range. Instead of simply getting the kick from 4k-6.5k it now comes on at 2k and travels up to 6.8 or so. There should still be a little boost at 4k but because your pull is much greater then before, when the added kick comes on at 4k its not as significant.

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[Mark]

<!--quoteo(post=80916:date=Sep 29 2009, 07:31 AM:name=Mark)-->QUOTE (Mark @ Sep 29 2009, 07:31 AM) <{POST_SNAPBACK}><!--quotec-->Apparently Rudolph and I have the same mods except the delrin bushings. [img]style_emoticons/<#EMO_DIR#>/smile.gif[/img]<!--QuoteEnd--><!--QuoteEEnd-->
I forgot I do also have a light flywheel and something else in there.

<!--quoteo(post=80917:date=Sep 29 2009, 08:38 AM:name=rhudeboye)-->QUOTE (rhudeboye @ Sep 29 2009, 08:38 AM) <{POST_SNAPBACK}><!--quotec-->[img]style_emoticons/<#EMO_DIR#>/blink.gif[/img] Did you loose a step on acceleration and put on a few lbs by that choice?<!--QuoteEnd--><!--QuoteEEnd-->

Yes, added weight back in but lost the chassis bar around the same time. I'm not tracking it so it's not a big deal and it will always be slower in acceleration than my Audi, but as Pete said the car is fun to drive.

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[Fox944]

sorry to take the thread off topic, just wanted to compliment Rudolf on his car, i really like the color combo. 2 thumbs up.

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[rhudeboye]

<!--quoteo(post=80934:date=Sep 29 2009, 08:14 AM:name=Mark)-->QUOTE (Mark @ Sep 29 2009, 08:14 AM) <{POST_SNAPBACK}><!--quotec-->it will always be slower in acceleration than my Audi, but as Pete said the car is fun to drive.<!--QuoteEnd--><!--QuoteEEnd-->

So getting the car to where you wanted it didn't require more HP. What an odd concept?

I debate about the LWFW for the same reason. I'd love to loose the weight and gain the revs but fear the rattle would drive me nuts. Same can be said about removing carpet and such.

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[RS Barn]

Porsche tunes the stock chip to be "Really" lean at low rpm-till 3,800 to get high mileage,low emmissionss, and be quiet for testing. They also over enrich at high 5500up to cool the enginge they made hot.
Our chips run pretty much at optimal 14.1/1 while part throttle and cruising but get happy 13/1 when you put your foot into it.
High altitide would only run a bit richer at full throttle . If anything I wiould pull out a bit of fuel, but not much
Pete

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[DayDreamer]

<!--quoteo(post=80976:date=Sep 30 2009, 02:07 AM:name=RS Barn)-->QUOTE (RS Barn @ Sep 30 2009, 02:07 AM) <{POST_SNAPBACK}><!--quotec-->High altitide would only run a bit richer at full throttle . If anything I wiould pull out a bit of fuel, but not much
Pete<!--QuoteEnd--><!--QuoteEEnd-->

Cool... Thanks... time to put foot with confidence [img]style_emoticons/<#EMO_DIR#>/smile.gif[/img]

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[Mark]

<!--quoteo(post=80943:date=Sep 29 2009, 11:27 AM:name=rhudeboye)-->QUOTE (rhudeboye @ Sep 29 2009, 11:27 AM) <{POST_SNAPBACK}><!--quotec-->So getting the car to where you wanted it didn't require more HP. What an odd concept?

I debate about the LWFW for the same reason. I'd love to loose the weight and gain the revs but fear the rattle would drive me nuts. Same can be said about removing carpet and such.<!--QuoteEnd--><!--QuoteEEnd-->

Oh it is has better than stock HP- Headers,cat,chip, undisclosed mod from Pete, LWF.

I did not notice any noise from the flywheel until I went back to stock exhaust. [img]style_emoticons/<#EMO_DIR#>/smile.gif[/img]

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[Johannvb]

<!--quoteo(post=80992:date=Sep 30 2009, 01:27 PM:name=Mark)-->QUOTE (Mark @ Sep 30 2009, 01:27 PM) <{POST_SNAPBACK}><!--quotec-->I did not notice any noise from the flywheel until I went back to stock exhaust. [img]style_emoticons/<#EMO_DIR#>/smile.gif[/img]<!--QuoteEnd--><!--QuoteEEnd-->

I know this is off topic, but just how noisy is the cat back? I thought that there wasn't such a bi gane in db...

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[rhudeboye]

<!--quoteo(post=80992:date=Sep 30 2009, 04:27 AM:name=Mark)-->QUOTE (Mark @ Sep 30 2009, 04:27 AM) <{POST_SNAPBACK}><!--quotec-->Oh it is has better than stock HP- Headers,cat,chip, undisclosed mod from Pete, LWF.

I did not notice any noise from the flywheel until I went back to stock exhaust. [img]style_emoticons/<#EMO_DIR#>/smile.gif[/img]<!--QuoteEnd--><!--QuoteEEnd-->

Dont get me wrong, I'm not under the impression your car is slow or stock. Actually It sounds quite nice. You just dont hear of many letting go of performance parts. But your point is well made.

There is an older post that talks about the rattle of the LWF. Everyone seems to agree that its there, nature of the beast. I'd enjoy the off the line jump but may regret it at higher speeds, the mass of the DMF sustains higher speeds with ease.

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[flash]

the older i get, the quieter i like my cars - even as mod crazy as i am, i spent an inordinate amount of time quieting down my exhaust, and searching for that "perfect" balance between performance and sound

to answer the question about the rs barn cat-back sound increase, it's there, but not a huge amount (maybe 4 - 6 db)- it is more the tone change that allows it to hide things - however, with the header, it is a bit louder than that, and even more tone change - this may or may not be pleasing to someone - i'm extremely picky, and wanted something very specific, so it sent me on a quest - others have no problem with it at all

i have no problem with sustaining high speeds with the flywheel - i really didn't notice any change in that regard

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[Mark]

My wife's car which does not have headers, lwfw, etc is fine with the RSB cat back, chip, air box mod. It sounds great and is not loud at all.

I have those mods and was not on the normal RSB cat back, Pete was throwing different things on there for me to test out. Last one sounded good but was loud for my old ass, so instead of playing to make it quiet he threw the OEM back on and I am happy with that. The noise really only comes into play on decel around 2,000 RPM give or take a few hundred so you can just avoid the range which is fine when cruising but a little more difficult in spirited mode.

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[PorscheDude]

Mark gave me a chance to drive his cab, absolutly loved it with his mods.
The flywheel and clutch setup were perfect.

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[clivehuggins]

<!--quoteo(post=80976:date=Sep 30 2009, 01:07 PM:name=RS Barn)-->QUOTE (RS Barn @ Sep 30 2009, 01:07 PM) <{POST_SNAPBACK}><!--quotec-->Porsche tunes the stock chip to be "Really" lean at low rpm-till 3,800 to get high mileage,low emmissionss, and be quiet for testing. They also over enrich at high 5500up to cool the enginge they made hot.
Our chips run pretty much at optimal 14.1/1 while part throttle and cruising but get happy 13/1 when you put your foot into it.
High altitide would only run a bit richer at full throttle . If anything I wiould pull out a bit of fuel, but not much
Pete<!--QuoteEnd--><!--QuoteEEnd-->

I have been considering a RSB chip to complement the airbox and K&N mod. As I run the car on 98 octane most of the time, would fitting the chip cause any issues? i.e. has the chip been developed with lower octane fuel in mind?

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[Mark]

98 RON is the same as 93 octane here in the US which is what we run in both our 968s. Both are chipped one Stage1 and one Stage2 and both have the airbox mod and K&N. No problems whatsoever with either setup. California residents have to work hard to get higher that 91 US octane/95 RON but most of us do not have that issue.

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[rhudeboye]

doing the AB mod w/o adding the chip is actually doing your car a bit of a disservice. As Pete said, its too lean before you allow in all that extra air. Get the RSB stage 1 and make your car more efficient.

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[Fox944]

<!--quoteo(post=81151:date=Oct 2 2009, 09:19 PM:name=Mark)-->QUOTE (Mark @ Oct 2 2009, 09:19 PM) <{POST_SNAPBACK}><!--quotec-->98 RON is the same as 93 octane here in the US which is what we run in both our 968s. Both are chipped one Stage1 and one Stage2 and both have the airbox mod and K&N. No problems whatsoever with either setup. California residents have to work hard to get higher that 91 US octane/95 RON but most of us do not have that issue.<!--QuoteEnd--><!--QuoteEEnd-->


We used to get 94 Octane here in NY (Sunoco). The state put a ban on it due to pollution however.

My former VW Corrado SLC VR6 was actually dyno tuned with 94 octane.

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[Mark]

Since there is a drag strip close buy race fuel is easily availa ble in my town. It says not for street use but only $$$ stop most people from running it.

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[Fox944]

<!--quoteo(post=81174:date=Oct 3 2009, 12:26 PM:name=Mark)-->QUOTE (Mark @ Oct 3 2009, 12:26 PM) <{POST_SNAPBACK}><!--quotec-->Since there is a drag strip close buy race fuel is easily availa ble in my town. It says not for street use but only $$$ stop most people from running it.<!--QuoteEnd--><!--QuoteEEnd-->


i wouldnt run 100 octane race fuel in a car with a cat. Bad business.

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[flash]

the 100 we get here in california is unleaded, so safe for a cat - it's not the octane that is the issues with cats, but rather the lead - it takes very little lead to ruin a cat

although, too much octane can cause hot running, and that can burn out all kinds of stuff

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[Jay 968]

<!--quoteo(post=81002:date=Sep 30 2009, 10:31 AM:name=flash)-->QUOTE (flash @ Sep 30 2009, 10:31 AM) <{POST_SNAPBACK}><!--quotec-->the older i get, the quieter i like my cars - even as mod crazy as i am, i spent an inordinate amount of time quieting down my exhaust, and searching for that "perfect" balance between performance and sound<!--QuoteEnd--><!--QuoteEEnd-->

+1 on quieter cars as the years go by.

In Ontario only Sunoco offers 94 octane, and there aren't many Sunocos. Everyone else offers 91. Am I going to have issues with the RSB chip?

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