Question for 997.1TT tuners
10-06-2018, 07:13 PM
#1
Burning Brakes
Thread Starter
Question for 997.1TT tuners
Purely out of interest, with COBB or other tuning solutions is it possible to:
A) Keep the standard mode as is
B) Bump the SPORT mode boost to whatever you as a professional consider reasonable or even leave the initial kick as is, but don’t let it taper towards the redline.
My thought process is, full OEM in standard mode. In SPORT mode get that initial kick but sustaining that pull/boost all the way to redline. This would be with .1 intercoolers so I don’t know how limiting that is.
Also with stock intercoolers and exhaust, boost aside and what I’m asking above, how responsive is this platform to spark/ignition advance. Could that sport mode be more savage with the help of ignition modulation if boost alone won’t get me what I’m looking for.
You can probably tell I’m a top end guy who doesn’t care about adding more bottom end to 997.1, but clearly i’m eager to have more up top in sport mode without any supporting mods.
A) Keep the standard mode as is
B) Bump the SPORT mode boost to whatever you as a professional consider reasonable or even leave the initial kick as is, but don’t let it taper towards the redline.
My thought process is, full OEM in standard mode. In SPORT mode get that initial kick but sustaining that pull/boost all the way to redline. This would be with .1 intercoolers so I don’t know how limiting that is.
Also with stock intercoolers and exhaust, boost aside and what I’m asking above, how responsive is this platform to spark/ignition advance. Could that sport mode be more savage with the help of ignition modulation if boost alone won’t get me what I’m looking for.
You can probably tell I’m a top end guy who doesn’t care about adding more bottom end to 997.1, but clearly i’m eager to have more up top in sport mode without any supporting mods.
10-06-2018, 07:20 PM
#2
Rennlist Member
Talk to Kevin at Ultimate Motorwerks, he is active on the forums and does custom tunes remotely.
On my tune, both the regular and sport modes have been cranked up. In sport mode I peak at 1.4 bar with the stock parts. Transition throttle is smoother and the turbos spool much quicker. A free flowing exhaust helps too, again Kevin will recommend the ones that make the big power.
On my tune, both the regular and sport modes have been cranked up. In sport mode I peak at 1.4 bar with the stock parts. Transition throttle is smoother and the turbos spool much quicker. A free flowing exhaust helps too, again Kevin will recommend the ones that make the big power.
10-06-2018, 09:39 PM
#3
You'd just do the GT2 /TT.2 coolers, they are factory parts and make a huge differences. Exhaust also needed to get the gain, I wouldn't go down the path of running more boost on the standard setup but that's just me.
Agree with Kramer, speak to Kevin
Agree with Kramer, speak to Kevin
10-06-2018, 10:33 PM
#4
Burning Brakes
Thread Starter
Thank you both for the response which I value, however, these do not get into the details of a matter that’s important to me... what the 997.1 top end is capable of without upgrades. Base target boost in Sport mode then timing and boost modulation so it never tapers off.
10-07-2018, 12:09 AM
#5
The answer is not much. To get value in top end you need intercoolers to flow the extra boost which can be had for $1400, exhaust helps with reduction of back pressure.
This is coming from owning modified 996 TT, 997 GT2 and 997.2TT - Kevin has done the TT's
Good luck with it, interested to see the results
This is coming from owning modified 996 TT, 997 GT2 and 997.2TT - Kevin has done the TT's
Good luck with it, interested to see the results
10-07-2018, 04:26 AM
#6
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Are you planning on running race gas all the time?
The 997.1TT platform in stock form is very sensitive to knock/knock retard on pump gas. This includes 93 octane. Put another way, in stock form on 93 octane the engine will pull 3 to 5 degrees of timing>>more if plugs are near 20K and over..
Engine load needs to be addressed to increase the output >>or as your put Kick..
BTW, BOOST will ALWAYS taper off since the compressor wheel can't sustain the boost pressure levels at tuned levels..
Email me and I will send you some stock datalogs that you can play with.... Sport mode engaged and Sport mode not engaged.
Edit>>I have to question what you feel is a strong topend.. 145>>that's the upper range of 4th gear..
The 997.1TT platform in stock form is very sensitive to knock/knock retard on pump gas. This includes 93 octane. Put another way, in stock form on 93 octane the engine will pull 3 to 5 degrees of timing>>more if plugs are near 20K and over..
Engine load needs to be addressed to increase the output >>or as your put Kick..
BTW, BOOST will ALWAYS taper off since the compressor wheel can't sustain the boost pressure levels at tuned levels..
Email me and I will send you some stock datalogs that you can play with.... Sport mode engaged and Sport mode not engaged.
Edit>>I have to question what you feel is a strong topend.. 145>>that's the upper range of 4th gear..
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10-08-2018, 02:46 PM
#8
Burning Brakes
Thread Starter
Thanks Kevin,
I’ll send you an email in a few days. Would be interesting to see some of these data logs. I would be running only 93 as this is a street only car and by strong top-end what I’m really seeking here is for that torque feel to never taper through the pull. It’s unfortunate these compressors can’t sustain upped boost all the way to 6K+.
A few more questions:
1) Can it sustain stock Sport boost all the way to redline? So take 1.2 bar and then force-tune for it to hold it all the way to fuel cut. Possible?
2) Whatsup with spark plugs needing such often replacement on this platform? Does it start pulling ignition due to misfires?
I tinker with my Supercharged S2000 all the time and -1 heat iradium plugs last forever even at 12psi on my Honda without any issues for 30K+ miles.
edit: 997.1TT, Sam is definitely great!
I’ll send you an email in a few days. Would be interesting to see some of these data logs. I would be running only 93 as this is a street only car and by strong top-end what I’m really seeking here is for that torque feel to never taper through the pull. It’s unfortunate these compressors can’t sustain upped boost all the way to 6K+.
A few more questions:
1) Can it sustain stock Sport boost all the way to redline? So take 1.2 bar and then force-tune for it to hold it all the way to fuel cut. Possible?
2) Whatsup with spark plugs needing such often replacement on this platform? Does it start pulling ignition due to misfires?
I tinker with my Supercharged S2000 all the time and -1 heat iradium plugs last forever even at 12psi on my Honda without any issues for 30K+ miles.
edit: 997.1TT, Sam is definitely great!
10-11-2018, 10:59 AM
#9
Three Wheelin'
Talk to Sam at BY-Design as he is the best and can help you with all of your questions and performance needs.
sam@bydesignauto.com
sam@bydesignauto.com
10-11-2018, 11:24 AM
#10
Rennlist Member
Thanks Kevin,
I’ll send you an email in a few days. Would be interesting to see some of these data logs. I would be running only 93 as this is a street only car and by strong top-end what I’m really seeking here is for that torque feel to never taper through the pull. It’s unfortunate these compressors can’t sustain upped boost all the way to 6K+.
A few more questions:
1) Can it sustain stock Sport boost all the way to redline? So take 1.2 bar and then force-tune for it to hold it all the way to fuel cut. Possible?
2) Whatsup with spark plugs needing such often replacement on this platform? Does it start pulling ignition due to misfires?
I tinker with my Supercharged S2000 all the time and -1 heat iradium plugs last forever even at 12psi on my Honda without any issues for 30K+ miles.
edit: 997.1TT, Sam is definitely great!
I’ll send you an email in a few days. Would be interesting to see some of these data logs. I would be running only 93 as this is a street only car and by strong top-end what I’m really seeking here is for that torque feel to never taper through the pull. It’s unfortunate these compressors can’t sustain upped boost all the way to 6K+.
A few more questions:
1) Can it sustain stock Sport boost all the way to redline? So take 1.2 bar and then force-tune for it to hold it all the way to fuel cut. Possible?
2) Whatsup with spark plugs needing such often replacement on this platform? Does it start pulling ignition due to misfires?
I tinker with my Supercharged S2000 all the time and -1 heat iradium plugs last forever even at 12psi on my Honda without any issues for 30K+ miles.
edit: 997.1TT, Sam is definitely great!
10-11-2018, 01:35 PM
#11
Three Wheelin'
+1 that...Sam's tuning/build knowledge on all things TT is prodigious to say the least. I just learned another tip from him yesterday: Never run your oil level above 1/4 above minimum on a cold engine. If you do the crankcase pressure will push oil back up your system until it reaches TB and will cause the hoses to pop on High boost engines and will clog everything up even in stock engines.
What exactly does this mean? When I do an oil change or maintain the oil level I use the Oil Level indicator through the dash and get it to at least the block below the full indicator and sometimes to the full indicator. Are you saying I should be at the first block in that screen?
Ed
10-11-2018, 03:20 PM
#12
Rennlist Member
Was going to ask the same thing - that oil level statement didn't quite make sense.
10-11-2018, 05:04 PM
#15
Rennlist Member
+1 that...Sam's tuning/build knowledge on all things TT is prodigious to say the least. I just learned another tip from him yesterday: Never run your oil level above 1/4 above minimum on a cold engine. If you do the crankcase pressure will push oil back up your system until it reaches TB and will cause the hoses to pop on High boost engines and will clog everything up even in stock engines.