997.1 IPD plenum and GT3 TB install time?
02-21-2018 | 05:01 PM
#16
Burning Brakes
Joined: Mar 2008
Posts: 982
Likes: 96
I will have my butt dyno re-calibrated prior to install.
I'd really like to dyno after the plenum and TB and then after the tune again. How's that going to look on a DME report though? It's a great safety factor built in as a buyer to see if the car was thrashed, but sort of sucks if you are an enthusiast who likes to modify things and the car could be sold down the road.
I'd really like to dyno after the plenum and TB and then after the tune again. How's that going to look on a DME report though? It's a great safety factor built in as a buyer to see if the car was thrashed, but sort of sucks if you are an enthusiast who likes to modify things and the car could be sold down the road.
02-21-2018 | 05:59 PM
#17
Pro
Joined: Aug 2017
Posts: 578
Likes: 39
unfortunately the person that logged the math values found no difference between it and the stock plenum so since there is no more air going in the computer would not have to correct for anything anyways.
but aside from that even if the mud did increase air intake these motronic systems run closed-loop under pretty much anything other than start up. So any increase in air intake is going to be factored in with closed-loop operation.
What you want to measure then is fuel trims before and after. Meaning you'll get the same effective air fuel ratio but the short term fuel trims would show slight enrichment due to the deviation from before the mod.
mike
03-19-2018 | 05:26 PM
#20
Advanced
Joined: May 2015
Posts: 72
Likes: 0
A valuable test will be to casually time acceleration, say 5-80mph, for five runs and calculate the average. You don't need to be aggressive or try to get the fastest time, just be consistent. Do the same thing after the install and see if the average drops.