993 live remapping for 308-310bhp
Discussion
As Dave Middleton posted on the 996 remapping topic, we live remapped his car and achieved 308.7bhp at the flywheel with more power at the tyres than previously at the engine. I resisted shouting about it until we had a chance to do another. Well, just got one off the rollers 10 minutes ago with 310bhp, so it seems that there is life in the old 993 Varioram yet. These were both standard engines with no more than a pair of free flow silencers and K&N air filter. So, it would seem that whilst there are a few folk spending £8000 on 305bhp 3.8 conversions when for £500 (+VAT) you can have more power and better response.
The question is: Does anyone out there have a hugely expensive 3.8 conversion and would like us to remap it for them (at their expense) as I am itching to find out what 9m can get out of one in order to justify a few extra cc's?
The question is: Does anyone out there have a hugely expensive 3.8 conversion and would like us to remap it for them (at their expense) as I am itching to find out what 9m can get out of one in order to justify a few extra cc's?
Speaking as a Porsche newbie, and at the risk of being mocked for not knowing such basics 
What is the standard output from the 993?
Did you see gains all across the rev range, or did you gain in some places and lose out in others?
More importantly, what happened to the torque curve? Did it level off, or become more peaky?
Questions questions questions.....
What is the standard output from the 993?
Did you see gains all across the rev range, or did you gain in some places and lose out in others?
More importantly, what happened to the torque curve? Did it level off, or become more peaky?
Questions questions questions.....
james said:
Speaking as a Porsche newbie, and at the risk of being mocked for not knowing such basics
What is the standard output from the 993?
Non varioram 272bhp, varioram 285bhp* 3.8 ie in 993RS or as an option in a very few normal 993's 300bhp*
* rare to see this high as standard when you get 'em on the rollers. 3.6 Varios often pump out the same bhp as the non varios but do have a usesful bit more midrange torque.
Sorry Clubsport, I don't seem to have got that mail. In principle there is no issue with us remapping a 3.6 or 3.75 engine, it would take the same time on the rollers so expect it to cost about the same.
As mentioned Dave, the ambient air temperature plays a large factor in terms of absolute power output, I suspect that we have just tested on a cooler day and hence the 1bhp change. You could always drive it down from Aberdeen on a cool damp morning for us to retest if you preferred.....
We remapped a non-varioram engine in a 911 Carrera 3.2 a while ago (red coupe featured in 911 & PW) and got 305bhp on a 964 exhaust, so I think we should get similar results with a stock 993nVR.
As for gains in the midrange and torque, we made more power everywhere, increased torque significantly AND ended up with more power at the wheels afterwards than at the flywheel before. I'll post the results on the 9m website as soon as I can. What more can I say than we need two weeks notice to book one in?
As mentioned Dave, the ambient air temperature plays a large factor in terms of absolute power output, I suspect that we have just tested on a cooler day and hence the 1bhp change. You could always drive it down from Aberdeen on a cool damp morning for us to retest if you preferred.....
We remapped a non-varioram engine in a 911 Carrera 3.2 a while ago (red coupe featured in 911 & PW) and got 305bhp on a 964 exhaust, so I think we should get similar results with a stock 993nVR.
As for gains in the midrange and torque, we made more power everywhere, increased torque significantly AND ended up with more power at the wheels afterwards than at the flywheel before. I'll post the results on the 9m website as soon as I can. What more can I say than we need two weeks notice to book one in?
Finally managed to scan the dyno result. You can see the information on our site if you access the 993 performance upgrade section in 9m Parts (I gave up trying to get the link working) or if it is just the before/after dyno result that you are looking for will this do?
Car tested is a 1998 993C2S limited, before in blue, after in red. The significant gains are 31.4bhp peak and 40bhp in the 3000-4500 range. No torque figures since we could not use the engine speed pickup on the dyno, but if I get chance I will log the road speed/power stats and back calculate the torque, although 40bhp gain here equates to around 390Nm peak.
>> Edited by ninemeister on Friday 7th November 18:09
Car tested is a 1998 993C2S limited, before in blue, after in red. The significant gains are 31.4bhp peak and 40bhp in the 3000-4500 range. No torque figures since we could not use the engine speed pickup on the dyno, but if I get chance I will log the road speed/power stats and back calculate the torque, although 40bhp gain here equates to around 390Nm peak.
>> Edited by ninemeister on Friday 7th November 18:09
The cars were both tested on a Bosch FLA-203 dyno but for the purpose of the tests the DIN correction was not used as there was a fault on the temp/rpm measurement system. The before/after on the day should be sufficient as a fair comparison, both cars tested gave the same kind of increases.
Unlike the less responsive and underfuelled 964, it seems unlikely that we could just add Motec to the 993 and achieve these kind of results.
Before we were live mapping our own cars we did reset the cam timing on a "chipped" 993RS that came in under power at 298bhp and came out afterwards with just over 315bhp & 380Nm. Motec was subsequently fitted onto this car and we ended up with 319bhp & 392Nm, so not breathtaking but respectable nontheless. A second Motec job yielded 322bhp on another 993RS CS. However both customers saw a massive increase in performance in transient conditions, i.e. going back onto the throttle and neither wannted to remove the system afterwards, so we must have done something right. However these were both primarily track cars, for road customers I am sure we can get the Motronic unit working well enough.
We do have plans to do the equivalent of a Motec +1 to the 993 & 993RS engine, but with more engine mods, a larger set of injectors and a Motronic ecu. The target is 350bhp from the stock 3.8 engine, but before you all start battering the doors down, this will only be ready early next year so please no calls or mails till I have finished the first one.
Before we were live mapping our own cars we did reset the cam timing on a "chipped" 993RS that came in under power at 298bhp and came out afterwards with just over 315bhp & 380Nm. Motec was subsequently fitted onto this car and we ended up with 319bhp & 392Nm, so not breathtaking but respectable nontheless. A second Motec job yielded 322bhp on another 993RS CS. However both customers saw a massive increase in performance in transient conditions, i.e. going back onto the throttle and neither wannted to remove the system afterwards, so we must have done something right. However these were both primarily track cars, for road customers I am sure we can get the Motronic unit working well enough.
We do have plans to do the equivalent of a Motec +1 to the 993 & 993RS engine, but with more engine mods, a larger set of injectors and a Motronic ecu. The target is 350bhp from the stock 3.8 engine, but before you all start battering the doors down, this will only be ready early next year so please no calls or mails till I have finished the first one.
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