davidcross
New member
What performance upgrades are available for my 997s pls? Engine re-mapping etc...costs and how much can i get the BHP up to...also who does this?? cheers
ENGINE UPGRADES
- Thread starter davidcross
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davidcross
New member
i have a gen 1 997s .......
Check out TSCAPTAIN threads on "The beast lives part 1, 2, 3, 4, you get the jist.
davidcross
New member
right ill see if i can find my way round the website to find the previous threads
David
"The Beast Lives" is a running commentary of changes I have made to my Gen 1 C2S.
Basically I wanted something like a GTS - A faster road car, normally aspirated but not a track day special, as I do a lot of long commutes for work it had to stay nearer to C2s/TT comfort than GT3.
Summary - Gains = approx 53hp on a dyno compared with starting hp (its a conservative dyno, in a closed room so the engine reads low due to not enough air in). Torque gains of about 60lbft.
Stuff done to engine:
- Porsche Powerkit (from new)
- Revo Stage 2 Engine Remap
- Milltek Low back pressure 100 cell sports exhaust (required for Revo Stage 2 remap)
- Slightly Tweaked K&N Induction Kit (BMC race filter)
Along side that I had to upgrade the brakes and have chosen to put thicker roll bars on and TT wheels and wider tyres to aid turn in and handling. Kept the original PASM set up so the rid is still quite complaint. I also went with the Aero Kit which amongst other things significantly increases airflow into the engine bay and therefore on road power.
Work was done in conjunction with Porcehshop in Coventry and some help and input from Parr and Parr's race engineer near Gatwick.
Best place to start is the engine remap as it also significantly sharpens throttle response so the car feels much more directly linked to your inputs. Especially if you have the sports button this really gives you a race engine feel when you switch it on.[
]
So I use sports button off for motor way/commuting. Sports button on for back roads (PASM always soft). It eliminates flat spots and is optimised for 95/99 RON fuels.
The cheapest improvement was the K&N induction at about £295 this gained 23.5hp on the dyno BUT this was after the other changes, without that you'll be lucky to get 10hp.
I am looking to try something Parr recommended to me and Porscheshop have been playing with for the induction kit this will squeeze out another 5 -10hp but should improve overall acceleration more than the power would suggest
"The Beast Lives" is a running commentary of changes I have made to my Gen 1 C2S.
Basically I wanted something like a GTS - A faster road car, normally aspirated but not a track day special, as I do a lot of long commutes for work it had to stay nearer to C2s/TT comfort than GT3.
Summary - Gains = approx 53hp on a dyno compared with starting hp (its a conservative dyno, in a closed room so the engine reads low due to not enough air in). Torque gains of about 60lbft.
Stuff done to engine:
- Porsche Powerkit (from new)
- Revo Stage 2 Engine Remap
- Milltek Low back pressure 100 cell sports exhaust (required for Revo Stage 2 remap)
- Slightly Tweaked K&N Induction Kit (BMC race filter)
Along side that I had to upgrade the brakes and have chosen to put thicker roll bars on and TT wheels and wider tyres to aid turn in and handling. Kept the original PASM set up so the rid is still quite complaint. I also went with the Aero Kit which amongst other things significantly increases airflow into the engine bay and therefore on road power.
Work was done in conjunction with Porcehshop in Coventry and some help and input from Parr and Parr's race engineer near Gatwick.
Best place to start is the engine remap as it also significantly sharpens throttle response so the car feels much more directly linked to your inputs. Especially if you have the sports button this really gives you a race engine feel when you switch it on.[
] So I use sports button off for motor way/commuting. Sports button on for back roads (PASM always soft). It eliminates flat spots and is optimised for 95/99 RON fuels.
The cheapest improvement was the K&N induction at about £295 this gained 23.5hp on the dyno BUT this was after the other changes, without that you'll be lucky to get 10hp.
I am looking to try something Parr recommended to me and Porscheshop have been playing with for the induction kit this will squeeze out another 5 -10hp but should improve overall acceleration more than the power would suggest
davidcross
New member
Tks chaps got there in the end. Tom, i notice u have the factory upgrade which i understand is 8 grand or something so i wondered if there was a cheaper alternative. Mate at work has an M5 that standard has 500 bhp and after a £900 re-map wil have 550 so i didnt knwo if this wud be an option as lets face it 8k is rather steep to say the least. You read the stories of people that have taken their 350 bhp 911 to 500 bhp but i often wonder how this affects the relaibility and ultimately affects the engine. Also ive been offered a set of 997 tt wheels for £1300 but without tyres. Obviously i have the same model car as youself so i couldnt use the same tyres so this adds to the cost. Also i asked OPC east london today for the Techquiptment aluminum hand brake cover and gear lever and they quoted me £1000 with VAT...Madness! They are coming back to me on the thicker steering wheel im after as they cant find the part number! I had the PSE fitted which i love and short shift will soon follow but i dont have sport chrono. Is there anyone i cud use for engine upgrade without the heafty cost that porsche charge ??
David
The Revo remap is for any 911 engine. In theory this giver you 15 -25hp and about 15 -20lbft torque for normally aspirated. it doesn't seem much but Revo are fairly conservative so these are realistic figures rather than ambitious claims. Thats around the £600-£700 mark. So in many ways one of the best value upgrades (I've already written about improved responsiveness).
In reality large power gains on a normally aspirated engine are unlikely. turbo's you can tweak much more easily. All the gains I have got, apart from the x51, are from improving the software and the engines breathing, I have not messed with the engine itself so I am told it should not effect the engines reliability. If it goes wrong, it was going to go wrong anyway. Obviously perishables like clutch and brakes will suffer due to the extra power.
Cargraphic or Milltek do a great sports exhaust that you can combine with a remap (Cargraphic's own or Revo uses Milltek) to get a bit more power and a lot more torque. If you then add a good induction kit - EVOMS or K&N your getting a good 40+ hp more but with a good spread across the range and a lot more torque lower down so the on road drive ability is optimised. You can get higher power figures but in the end your pushing it out at the top of the rev range and sacrificing torque and in gear acceleration. Great on a straight from a standing start but on real roads the combination I went for would leave the higher powered one behind.
Costs
Revo Remap approx £600 -£700
Milltek/Car graphic exhaust plus stage 2 remap approx £1800 -£2500
EVOMS/K&N Induction approx £300 - £600
Thats the order I would do it in. I'd implement each one stage at a time so you get used to the change before the next upgrade. Once you've done all three if not before you'll need to upgrade the brakes, the extra power/torque will overwhelm them when your under full acceleration. Note - the induction kits really get returns when combined with the low back pressure exhausts - so it might seem like an expensive upgrade for a small extra HP gain over the stock revo but you double the gains with the induction kit. The combined sound of the induction kit and exhaust makes a fab noise too.
The aero back wing and intakes produces a ram effect forcing the air into the engine bay, whereas the normal retractable system allows airflow to slow down and be pulled in by the venturi effect (the underside of the car with panels creates a bit of a vacuum which sucks air through the engine bay). So again this will not only increase stability but give you a couple of extra horses
By this stage there is not much more that can be done without messing with the engine itself (££££££'s). Frankly the extra grunt you'll already have will be very visible and like me, your likely to end up improving other aspects of the car rather than re-boring the engine.
All the changes above can be reversed quite easily so you can return your car to stock for resale if a prospective buyer would want it that way, or if you are trading back into an OPC.
The Revo remap is for any 911 engine. In theory this giver you 15 -25hp and about 15 -20lbft torque for normally aspirated. it doesn't seem much but Revo are fairly conservative so these are realistic figures rather than ambitious claims. Thats around the £600-£700 mark. So in many ways one of the best value upgrades (I've already written about improved responsiveness).
In reality large power gains on a normally aspirated engine are unlikely. turbo's you can tweak much more easily. All the gains I have got, apart from the x51, are from improving the software and the engines breathing, I have not messed with the engine itself so I am told it should not effect the engines reliability. If it goes wrong, it was going to go wrong anyway. Obviously perishables like clutch and brakes will suffer due to the extra power.
Cargraphic or Milltek do a great sports exhaust that you can combine with a remap (Cargraphic's own or Revo uses Milltek) to get a bit more power and a lot more torque. If you then add a good induction kit - EVOMS or K&N your getting a good 40+ hp more but with a good spread across the range and a lot more torque lower down so the on road drive ability is optimised. You can get higher power figures but in the end your pushing it out at the top of the rev range and sacrificing torque and in gear acceleration. Great on a straight from a standing start but on real roads the combination I went for would leave the higher powered one behind.
Costs
Revo Remap approx £600 -£700
Milltek/Car graphic exhaust plus stage 2 remap approx £1800 -£2500
EVOMS/K&N Induction approx £300 - £600
Thats the order I would do it in. I'd implement each one stage at a time so you get used to the change before the next upgrade. Once you've done all three if not before you'll need to upgrade the brakes, the extra power/torque will overwhelm them when your under full acceleration. Note - the induction kits really get returns when combined with the low back pressure exhausts - so it might seem like an expensive upgrade for a small extra HP gain over the stock revo but you double the gains with the induction kit. The combined sound of the induction kit and exhaust makes a fab noise too.
The aero back wing and intakes produces a ram effect forcing the air into the engine bay, whereas the normal retractable system allows airflow to slow down and be pulled in by the venturi effect (the underside of the car with panels creates a bit of a vacuum which sucks air through the engine bay). So again this will not only increase stability but give you a couple of extra horses
By this stage there is not much more that can be done without messing with the engine itself (££££££'s). Frankly the extra grunt you'll already have will be very visible and like me, your likely to end up improving other aspects of the car rather than re-boring the engine.
All the changes above can be reversed quite easily so you can return your car to stock for resale if a prospective buyer would want it that way, or if you are trading back into an OPC.
Yes, sorry about that Alan, my short term memory is not so good it seems. I should have done a quick search to check first.
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