[Fox944]

What kind of increase in power do you get from the RS Barn Cams & Stage 3 chip? Increase over a car with all the Stage 2 goodies (airbox, stage 2 chip, header, full exhaust).

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[mrmister]

I would also be interested in knowing what the increase would be.

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[flash]

be aware that the cams are not for a street car



there are charts here showing the other stuff

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[Renalicious]

Awww, why not? <img src="/forum/images/smilies/968/sad.gif" class="smilie" alt="" />

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[flash]

altered rev range mostly, but i suspect they would have the same lower rev issues that most such cams have - pete can tell you more, but they are really designed for a race car, and not really streetable - there is real power to be had though, if you plan to build a track car



if a streetable setup comes around, that still passes emissions, i'll definitely have them in my car

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[RS Barn]

Cams,

My cams have a gain of 12-15HP and torque over stage 2 mods from 4K to 6500rpm

When we do dyno testing we slam the throttle at 2500rpm and wait for the response. Not really ideal but a constant testing method

This test shows a drop in power from 2500 to 3500 over stage 2 . From there on up there is a consistant gain.

When you street drive with the cams and feed the throttle you never feel the lag at lower end only the gain in upper end.

They are very streetable and don't feel very different than stock

Pete

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[flash]

well then - it looks like more development has happened since we last spoke about these - i'm pretty unhappy with the lack of torque below 4k, and i've got more than stock, so i'm not sure i'd be willing to give up any, but the upper power is enticing



interesting.....................

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[Renalicious]

So with cams the car will feel stock-ish at lower RPM, then turns into a rocket at high RPM. Where as full stage 2 is more rounded everywhere, hmmm. I can see why it's more suited for race cars instead of street cars. What is the sound like with these cams? I've always heard that cams change how the car sounds. <img src="/forum/images/smilies/968/smile.gif" class="smilie" alt="" />

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[flash]

i've only been in one car with the cams, and it had an aftermarket intake manifold that is now a flower pot, so that is no gauge



after talking with pete this morning, it seems the cams are "fairly mild" and may well be very reasonable - emissions are still a concern, but it is sounding like, given a strong running engine and fresh head, that, with some tuning, they could work very nicely in my street car



i may have to do the head sooner than i planned, just so that i can do this

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[biotechee]

Doooo it!

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[flash]

lol - yeah - gonna have to figure out how to get that past the boss, since the whole engine only has 47k on it, and compression is perfect - i'll figure it out though

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[banditsc]

Sounds to me like you need another motor sitting on a stand in the garage for easy swap ability.. You could even put it in the house and call it decor.. <img src="/forum/images/smilies/968/smile.gif" class="smilie" alt="" />

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[flash]

lol - don't get me started - i've been thinking about that very thing

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[Renalicious]

Well, you could always say that this "new" engine is an experimental prototype, recently discovered in one of the many Porsche warehouses, and they needed you to check it out <img src="/forum/images/smilies/968/biggrin.gif" class="smilie" alt="" />

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[UKCS]

I have Pete's cams, unfortunately i cannot comment on them in isolation re performance - i had a number of other significant changes made at the same time (more of Pete's products). Being a right hand drive car i am also unable to use his headers and my set-up suffers as a result of this. I have tried various chips also (and rolling roaded them) with my current set-up, and indeed, for the type of driving my car is subjected to (track) have one of Pete's in the car now which i am very happy with. The car desperately needs live mapping though to get the absolute best from it (for MY particular set-up - and you have to consider this is probably 5-6 times more expensive than one of Pete's chips), and i still need to sort the exhaust out (header in particular - also currently have a cargraphic system which i feel can be improved upon). Both will be done later this year, and so am reluctant to start quoting power figures etc because i feel people will make judgements on unknown quantities, and some will place too much emphasis on headline figures. Thanks to Pete (and his products), plus rolling roaded various chips, i have learnt an awful lot re power/torque curves/delivery etc. (one of the greatest attributes for me has been engine response and speed of delivery - try showing that on a rolling road)



I do have significantly more power/torque than my 90k+ car started with (10's of units), most of it further up the rev range - in fact, from my rolling road tests i know i can easily increase my bottom to mid range by around 25bhp/lbs with live mapping. It is also worth noting that for those that insist on depending on 'headline' figures, of all the chips i tried Pete's produced the highest ultimate figure and the highest gains from around 5k onwards - but again i emphasise for my particular application.



What i have learnt is that there are some great engine performance mods out there, in isolation they may produce positive results. Together, they become more difficult to predict, and as you go further down the engine modding route you may have to make driveability sacrifices. Hence you need to be clear what it is you are trying to achieve - a quicker 'performance orientated' road car or a race car that you have to keep at high revs to get the best out of it.



Getting back to the original question, what i can say is that i have slightly more engine 'lumpyness' at very low revs/tickover, nothing that causes any problems or inconvienience (i suspect a few would even like that marginal 'rally' car feel and slightly 'lumpy' exhaust tickover note!), but yet again, will emphasise it is marginal.



UKCS

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[94SilverCab]

A very well balanced and thoughtful review, Thank you!

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[Cloud9...68]

[quote name='UKCS' post='54759' date='Jun 14 2008, 05:44 AM']I have Pete's cams, unfortunately i cannot comment on them in isolation re performance - i had a number of other significant changes made at the same time (more of Pete's products). Being a right hand drive car i am also unable to use his headers and my set-up suffers as a result of this. I have tried various chips also (and rolling roaded them) with my current set-up, and indeed, for the type of driving my car is subjected to (track) have one of Pete's in the car now which i am very happy with. The car desperately needs live mapping though to get the absolute best from it (for MY particular set-up - and you have to consider this is probably 5-6 times more expensive than one of Pete's chips), and i still need to sort the exhaust out (header in particular - also currently have a cargraphic system which i feel can be improved upon). Both will be done later this year, and so am reluctant to start quoting power figures etc because i feel people will make judgements on unknown quantities, and some will place too much emphasis on headline figures. Thanks to Pete (and his products), plus rolling roaded various chips, i have learnt an awful lot re power/torque curves/delivery etc. (one of the greatest attributes for me has been engine response and speed of delivery - try showing that on a rolling road)



I do have significantly more power/torque than my 90k+ car started with (10's of units), most of it further up the rev range - in fact, from my rolling road tests i know i can easily increase my bottom to mid range by around 25bhp/lbs with live mapping. It is also worth noting that for those that insist on depending on 'headline' figures, of all the chips i tried Pete's produced the highest ultimate figure and the highest gains from around 5k onwards - but again i emphasise for my particular application.



What i have learnt is that there are some great engine performance mods out there, in isolation they may produce positive results. Together, they become more difficult to predict, and as you go further down the engine modding route you may have to make driveability sacrifices. Hence you need to be clear what it is you are trying to achieve - a quicker 'performance orientated' road car or a race car that you have to keep at high revs to get the best out of it.



Getting back to the original question, what i can say is that i have slightly more engine 'lumpyness' at very low revs/tickover, nothing that causes any problems or inconvienience (i suspect a few would even like that marginal 'rally' car feel and slightly 'lumpy' exhaust tickover note!), but yet again, will emphasise it is marginal.



UKCS[/quote]

Thanks for the review. You write very well, something that is sadly becoming a lost art.

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[Frog76]

I am running the RSBarn Performance Cams along with a custom chip, Dynomax exhaust, and the airbox mod. The headers are standard. I also have a RHD car, and Pete's Stage 3 chip runs too rich without the RSBarn headers in my setup.



After several efforts, the car is now producing about 270 hp at the crank - nice gain of 30hp.



Compared to stock, the idle is rough; mid-range power/torque is comparable, with the real power gains above 4500, especially 5000rpm to 7000 rpm.



The cams are quite sensitive to the exhaust and running condition of the engine - it seems that if the engine is not performing at its best, the cams wont perform that well.

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[Rudolf968]

270 HP at the wheels ???

this is a lot more than a gain of 30 HP

OEM = 240 HP at engine --> maybe 210 HP at the wheels

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[PorscheDude]

270 @ the wheels???

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