Mods and Dyno ###
08-03-2018, 08:09 AM
#1
Racer
Thread Starter
Mods and Dyno ###
How many on this forum have done a base dyno run then did the basic bolt-ons (CAI or BMS Filter, PTB, X-pipe) then another dyno run (Stock Tune) and saw a reasonable HP gain, then drove the car for a significant period of time then did another dyno run, did it return to the base dyno run ###'s or was it the roughly same post mod dyno ###'s? Just curious.
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Null Pointer (08-03-2018)
08-03-2018, 12:30 PM
#3
It would be interesting to see someone post results. I believe the TB is great for better throttle response on the M7 cars. The BMS filter may help a bit as well. The Xpipe is AWESOME for sound regardless of any power gain. That's my next mod👍🏻
08-03-2018, 12:48 PM
#4
Le Mans Master
Good questions.
Interested to hear response
I did the bms filter. At first seat of the pants it felt much better . After a while it went back to the way it was maybe even worSe.
My opinion is the computer is big brother over governance. To mininmize warranty claims and to cope with the vast overly complex , overly engineered rolling steaming heap of 💩
Interested to hear response
I did the bms filter. At first seat of the pants it felt much better . After a while it went back to the way it was maybe even worSe.
My opinion is the computer is big brother over governance. To mininmize warranty claims and to cope with the vast overly complex , overly engineered rolling steaming heap of 💩
08-03-2018, 01:05 PM
#5
Good questions.
Interested to hear response
I did the bms filter. At first seat of the pants it felt much better . After a while it went back to the way it was maybe even worSe.
My opinion is the computer is big brother over governance. To mininmize warranty claims and to cope with the vast overly complex , overly engineered rolling steaming heap of 💩
Interested to hear response
I did the bms filter. At first seat of the pants it felt much better . After a while it went back to the way it was maybe even worSe.
My opinion is the computer is big brother over governance. To mininmize warranty claims and to cope with the vast overly complex , overly engineered rolling steaming heap of 💩
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BMadden (08-06-2018),
Harbgrogan (09-13-2018)
08-03-2018, 01:14 PM
#6
Racer
Thread Starter
Yea I know. I started this thread hoping to get some feedback either way. I have seen some of the latest threads were mods were done but no power increase, however I know there some forum members who have done mods and seen a power increase and maintained it over time on the Stock Tune, in fact I believe there are a few running the 9% lower pulley on the factory tune and making power.
08-03-2018, 01:19 PM
#7
Le Mans Master
08-03-2018, 01:31 PM
#8
Former Vendor
The ECU can't learn out the BMS filter changes. But, performance can vary day to day based on temperature, heat soak, and ambient conditions. Especially on the stock tuning which is super aggressive with pulling timing due to heat.
The following 2 users liked this post by Terry@BMS:
BearZ06 (08-12-2018),
Harbgrogan (09-13-2018)
08-03-2018, 07:26 PM
#9
The following users liked this post:
Harbgrogan (09-13-2018)
08-03-2018, 08:02 PM
#11
Team Owner
08-03-2018, 08:14 PM
#12
Burning Brakes
Planning on going with the GM intake and Borla X. Hoping for some sort of gains on stock tune
Last edited by KillerC7zo6; 08-03-2018 at 08:23 PM.
08-03-2018, 08:18 PM
#13
08-03-2018, 08:23 PM
#14
Burning Brakes
i have a 2019 so I’m afraid of the CEL popping up with a bms. Sold on the fact that the GM intake won’t throw a code
08-03-2018, 08:40 PM
#15
Burning Brakes
I did a base dyno test with a stock tune and no mods. I then installed the Mamo ported TB and the Burger filter and drove the car over 200 miles before dyno testing it again. I installed the Borla mid pipe today and will put another 200 plus miles on the car before another dyno test Monday. The base dyno run and the 2nd run with the TB & filter are posted on another thread. I will post the 3rd dyno test next week on the same thread. The reason I am putting 200 plus miles on the car after each mod step is to find out if the ECU is readjusting for the mods. All of the dyno tests I have seen on these three mods were done immediately after installing them. I don't know if others here have had different results and I am only speaking for myself. 
08-03-2018, 08:48 PM
#16
Team Owner
The Halltech intake gets 40rwhp plus. The BMS is good choice for those who want a nice improvement but want keep the stock look! Not familiar with the GM CAI.
08-03-2018, 09:00 PM
#17
Back to topic where are the DYNO results after the top 3 mods😄
08-03-2018, 09:07 PM
#18
I did a base dyno test with a stock tune and no mods. I then installed the Mamo ported TB and the Burger filter and drove the car over 200 miles before dyno testing it again. I installed the Borla mid pipe today and will put another 200 plus miles on the car before another dyno test Monday. The base dyno run and the 2nd run with the TB & filter are posted on another thread. I will post the 3rd dyno test next week on the same thread. The reason I am putting 200 plus miles on the car after each mod step is to find out if the ECU is readjusting for the mods. All of the dyno tests I have seen on these three mods were done immediately after installing them. I don't know if others here have had different results and I am only speaking for myself.
08-03-2018, 09:36 PM
#19
Team Owner
How many on this forum have done a base dyno run then did the basic bolt-ons (CAI or BMS Filter, PTB, X-pipe) then another dyno run (Stock Tune) and saw a reasonable HP gain, then drove the car for a significant period of time then did another dyno run, did it return to the base dyno run ###'s or was it the roughly same post mod dyno ###'s? Just curious.
Also shows they shine with intake and AR headers with just a tune which is the upper graph. But the lower graph or base line is intake only no tune
I don't have the base but the shop's owners said they make 560 range. This was 3-4 months after the install. If you make too many changes it throws it way off and you may lose power when you expected a gain. The car vary a little from one to the next esp the 2017's.
Last edited by 3 Z06ZR1; 08-03-2018 at 09:38 PM.
08-03-2018, 10:41 PM
#20
Tech Contributor
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A DynoJet dyno has 1% accuracy. That means the power level can vary 1% up or down from the reading you see on the display. If you see 600 HP the actual power may be between 594 and 606 HP. The next dyno run will have the same error range. You need to do several runs in a row with temperature and humidity controlled so they are the same from one run to the other. To get a better number you probably need to average 10 runs before to get your before number and 10 runs after the mods to get your after number.
When you drive away and come back 2 weeks later you run into the same error range of numbers and also have the problem of duplicating the environment the previous sessions had. If you are making mods that only add a few HP it is likely you will ever really know the full impact of the mods (if any).
Bill
When you drive away and come back 2 weeks later you run into the same error range of numbers and also have the problem of duplicating the environment the previous sessions had. If you are making mods that only add a few HP it is likely you will ever really know the full impact of the mods (if any).
Bill
Last edited by Bill Dearborn; 08-03-2018 at 10:43 PM.