GT4 - Unlocking the Power Potential!
06-30-2016, 11:07 AM
#721
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UPDATE: Cobb Tuning has revised their software to give me control of the final piece of the puzzle and i will be trying it out today. This puts me in a position to wrap up everything to the point where i am happy with it and i'm ready to keep pushing on to find more ways to make more power. Cams anyone?!? 
06-30-2016, 11:23 AM
#722
Rennlist Member
Yaaaaaaay. Keep us posted.
06-30-2016, 01:06 PM
#723
just a working one with the TB would be a start, enough for 99 % of the GT4 out there if we can get 420BHp and avoid the 5k torque dip.
07-01-2016, 01:16 AM
#724
CAMS!
07-01-2016, 09:15 AM
#725
UPDATE: Cobb Tuning has revised their software to give me control of the final piece of the puzzle and i will be trying it out today. This puts me in a position to wrap up everything to the point where i am happy with it and i'm ready to keep pushing on to find more ways to make more power. Cams anyone?!?
07-01-2016, 10:13 AM
#726
Race Director
07-01-2016, 07:51 PM
#727
07-01-2016, 08:06 PM
#728
Instructor
07-01-2016, 08:17 PM
#729
Rennlist Member
It would be a much more desirable mod for the short term... ie warranty concerns
07-01-2016, 10:01 PM
#730
Instructor
07-02-2016, 01:53 AM
#731
07-02-2016, 05:31 PM
#732
Burning Brakes
Originally Posted by COBB Tuning
the v102 maps are needed for the IPD Plenum/TB upgrade. We just released a firmware update yesterday which moved the maps to release firmware so you (or your tuner) can access them by updating the firmware on the Accessport and then selecting the "Restore OTS Maps" option in the Tune menu of the Accessport.
I also checked COBBs site for updated info and they JUST released a v103 with new maps that reads:
"New Porsche 981 GT4/ Boxster Spyder Maps
V103 - 981 Cayman GT4 / Boxster Spyder updated maps to accommodate IPD plenum and throttle body
Added Stage2 to support aftermarket headers."
https://cobbtuning.atlassian.net/wik...1+NA+Map+Notes
ACI Dynamix a shop near me is building a Stage 2 GT4 right now and has a reputable in house Cobb Pro Tuner. With just the tune they got to 400hp, and they expect the TB, IPD plenum and headers to add around 20whp maybe more.
The 5k dip was fixed with a tune ONLY (no bolt-ons necessary)
I can repost the dyno print out from ACI if you want to see the fixed dip.
Their GT4 did 310 whp stock and 320 whp.
It was tuned on an AWD Mustang dyno with 20% drivetrain loss (AWD dyno that has the rear wheels spining the rear rollers, the front rollers and the front wheels):
385 engine hp*20%=308 wheel hp
400 crank hp*20%=320 wheel hp
I'll post again when they have the dyno for the retune with bolt-ons.
07-02-2016, 05:51 PM
#733
This already exists. See below:
Based on what I learned from with Jared @ COBB and John @ BGB if you have an AccessPort you need to have a tune based on a v102 map and check the box for the P0068 toggle.
I also checked COBBs site for updated info and they JUST released a v103 with new maps that reads:
"New Porsche 981 GT4/ Boxster Spyder Maps
V103 - 981 Cayman GT4 / Boxster Spyder updated maps to accommodate IPD plenum and throttle body
Added Stage2 to support aftermarket headers."
https://cobbtuning.atlassian.net/wik...1+NA+Map+Notes
ACI Dynamix a shop near me is building a Stage 2 GT4 right now and has a reputable in house Cobb Pro Tuner. With just the tune they got to 400hp, and they expect the TB, IPD plenum and headers to add around 20whp maybe more.
The 5k dip was fixed with a tune ONLY (no bolt-ons necessary)
I can repost the dyno print out from ACI if you want to see the fixed dip.
Their GT4 did 310 whp stock and 320 whp.
It was tuned on an AWD Mustang dyno with 20% drivetrain loss (AWD dyno that has the rear wheels spining the rear rollers, the front rollers and the front wheels):
385 engine hp*20%=308 wheel hp
400 crank hp*20%=320 wheel hp
I'll post again when they have the dyno for the retune with bolt-ons.
Based on what I learned from with Jared @ COBB and John @ BGB if you have an AccessPort you need to have a tune based on a v102 map and check the box for the P0068 toggle.
I also checked COBBs site for updated info and they JUST released a v103 with new maps that reads:
"New Porsche 981 GT4/ Boxster Spyder Maps
V103 - 981 Cayman GT4 / Boxster Spyder updated maps to accommodate IPD plenum and throttle body
Added Stage2 to support aftermarket headers."
https://cobbtuning.atlassian.net/wik...1+NA+Map+Notes
ACI Dynamix a shop near me is building a Stage 2 GT4 right now and has a reputable in house Cobb Pro Tuner. With just the tune they got to 400hp, and they expect the TB, IPD plenum and headers to add around 20whp maybe more.
The 5k dip was fixed with a tune ONLY (no bolt-ons necessary)
I can repost the dyno print out from ACI if you want to see the fixed dip.
Their GT4 did 310 whp stock and 320 whp.
It was tuned on an AWD Mustang dyno with 20% drivetrain loss (AWD dyno that has the rear wheels spining the rear rollers, the front rollers and the front wheels):
385 engine hp*20%=308 wheel hp
400 crank hp*20%=320 wheel hp
I'll post again when they have the dyno for the retune with bolt-ons.
07-02-2016, 05:58 PM
#734
Burning Brakes
This already exists. See below:
Based on what I learned from with Jared @ COBB and John @ BGB if you have an AccessPort you need to have a tune based on a v102 map and check the box for the P0068 toggle.
I also checked COBBs site for updated info and they JUST released a v103 with new maps that reads:
"New Porsche 981 GT4/ Boxster Spyder Maps
V103 - 981 Cayman GT4 / Boxster Spyder updated maps to accommodate IPD plenum and throttle body
Added Stage2 to support aftermarket headers."
https://cobbtuning.atlassian.net/wik...1+NA+Map+Notes
ACI Dynamix a shop near me is building a Stage 2 GT4 right now and has a reputable in house Cobb Pro Tuner. With just the tune they got to 400hp, and they expect the TB, IPD plenum and headers to add around 20whp maybe more.
The 5k dip was fixed with a tune ONLY (no bolt-ons necessary)
I can repost the dyno print out from ACI if you want to see the fixed dip.
Their GT4 did 310 whp stock and 320 whp.
It was tuned on an AWD Mustang dyno with 20% drivetrain loss (AWD dyno that has the rear wheels spining the rear rollers, the front rollers and the front wheels):
385 engine hp*20%=308 wheel hp
400 crank hp*20%=320 wheel hp
I'll post again when they have the dyno for the retune with bolt-ons.
Based on what I learned from with Jared @ COBB and John @ BGB if you have an AccessPort you need to have a tune based on a v102 map and check the box for the P0068 toggle.
I also checked COBBs site for updated info and they JUST released a v103 with new maps that reads:
"New Porsche 981 GT4/ Boxster Spyder Maps
V103 - 981 Cayman GT4 / Boxster Spyder updated maps to accommodate IPD plenum and throttle body
Added Stage2 to support aftermarket headers."
https://cobbtuning.atlassian.net/wik...1+NA+Map+Notes
ACI Dynamix a shop near me is building a Stage 2 GT4 right now and has a reputable in house Cobb Pro Tuner. With just the tune they got to 400hp, and they expect the TB, IPD plenum and headers to add around 20whp maybe more.
The 5k dip was fixed with a tune ONLY (no bolt-ons necessary)
I can repost the dyno print out from ACI if you want to see the fixed dip.
Their GT4 did 310 whp stock and 320 whp.
It was tuned on an AWD Mustang dyno with 20% drivetrain loss (AWD dyno that has the rear wheels spining the rear rollers, the front rollers and the front wheels):
385 engine hp*20%=308 wheel hp
400 crank hp*20%=320 wheel hp
I'll post again when they have the dyno for the retune with bolt-ons.
20 ft/lbs and 20hp gained @ ~4750 RPM
Smooths out the dip nicely on both curves.
07-02-2016, 06:03 PM
#735
Guys, if you're in a warm area, a tune is the last thing you want. Jump to bgb's x51. We've had so much trouble with Cobb at the track a few of us have removed it. All the free hp is too good to be true.