CPR installed Fabspeed test pipe with dyno video

Reply Subscribe

Thread Tools

Search this Thread

May 29, 2020 | 10:53 PM

Cordes Performance Racing

Thread Starter

Supporting Vendor

Joined: Feb 2009

Posts: 4,421

Likes: 1,430

From: Mesa Az

CPR installed Fabspeed test pipe with dyno video

Here is the latest video with us tearing down the C8 and going through all the little area's on the car to find out what we see. Yes we are goofballs at times but we just love what we do and enjoy finding new stuff. At the end is the dyno portion with sound clips so if that's all you care about feel free to skip ahead.

__________________
Cordes Performance Racing aka "CPR"
Owner of AZ's premier LSX/LTX motorsports shop
http://cordesperformanceracing.com/
www.facebook.com/cordesperformanceracing.com
joe@cordesperformanceracing.com
480-359-5914

May 30, 2020 | 01:12 PM

Mr_Desmo

Intermediate

Joined: Aug 2013

Posts: 39

Likes: 4

Sounds great! Looking at the air fuel on the dyno sheet i can see that the test pipes leaned out the ratio substantially from 11.5 to a perfect 13 to 1. Will the ecu bring back the air fuel ratio to 11.5 to one over a period of time? If you tune the stock car to the same leaner 13/1 and add test pipes and correct the tune; what kind of gain are we looking at?

May 30, 2020 | 01:35 PM

Cordes Performance Racing

Thread Starter

Supporting Vendor

Joined: Feb 2009

Posts: 4,421

Likes: 1,430

From: Mesa Az

Quote:

Originally Posted by Mr_Desmo

Sadly we cant tune them yet. We will revisit the dyno and see if afr changed after awhile to know if pcm auto corrected.

Jun 2, 2020 | 03:22 PM

RapidC84B

Team Owner

Joined: Feb 2013

Posts: 22,598

Likes: 14,556

Man that sounds awesome.

Jun 2, 2020 | 05:33 PM

azvrod

Instructor

Joined: Oct 2009

Posts: 236

Likes: 55

Quote:

Originally Posted by Joe@CPR

Sadly we cant tune them yet. We will revisit the dyno and see if afr changed after awhile to know if pcm auto corrected.

Joe and NicD doing their thing! Joe did that thing pick up 30HP and TQ just with a cat delete?

Last edited by azvrod; Jun 2, 2020 at 05:59 PM.

Jun 2, 2020 | 05:53 PM

Cordes Performance Racing

Thread Starter

Supporting Vendor

Joined: Feb 2009

Posts: 4,421

Likes: 1,430

From: Mesa Az

Quote:

Originally Posted by azvrod

Joe and Nick doing their thing! Joe did that thing pick up 30HP and TQ just with a cat delete?

sure did! pretty wild

Jun 12, 2020 | 11:20 AM

vetteandv

Racer

Joined: Jan 2017

Posts: 363

Likes: 227

From: Poconos Pennsylvania

So did these throw a check engine light? Has the car been driven much since they have been installed?

Jun 12, 2020 | 11:54 AM

Cordes Performance Racing

Thread Starter

Supporting Vendor

Joined: Feb 2009

Posts: 4,421

Likes: 1,430

From: Mesa Az

Quote:

Originally Posted by vetteandv

So did these throw a check engine light? Has the car been driven much since they have been installed?

it did throw a light. we will work on another solution however.

Corvette Stories

The Best of Corvette for Corvette Enthusiasts

10 Ugly Corvettes That We Still Kinda Love

Joe Kucinski

Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

Brett Foote

10 Things Every Corvette Owner Needs (2026 Edition)

Michael S. Palmer

8 Most "Only Corvette Owners Understand" Quirks and Problems

Pouria Savadkouei

10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

Joe Kucinski

How Much Horsepower Every Corvette Engine "LOST" in 1972

Joe Kucinski

Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

Michael S. Palmer

Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

Joe Kucinski

150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

Joe Kucinski

8 Coolest Corvette Pace Cars (and Replicas) of All Time

Verdad Gallardo

Jun 12, 2020 | 09:40 PM

Brandon619

Le Mans Master

Joined: Dec 2003

Posts: 5,047

Likes: 252

From: San Diego

Some Kooks headers and a cat delete with an exhaust would be 🔥

Jun 13, 2020 | 04:05 PM

#10

Shokosugi

Drifting

Joined: Jun 2020

Posts: 1,550

Likes: 1,921

From: San Jose

What’s the lead time on ur valved full exhaust and cats? Also how would you compare the sound and volume of the valved setup when open v. Your x pipe?

May 16, 2021 | 01:02 PM

#11

MarioC8

Pro

Joined: Jan 2021

Posts: 649

Likes: 576

From: South Florida

Not much info on test pipes out there. Did the afr normalize afterwards? If so, does hp drop back down?

May 17, 2021 | 12:56 PM

#12

Cordes Performance Racing

Thread Starter

Supporting Vendor

Joined: Feb 2009

Posts: 4,421

Likes: 1,430

From: Mesa Az

Quote:

Originally Posted by MarioC8

Not much info on test pipes out there. Did the afr normalize afterwards? If so, does hp drop back down?

this car never made it back on our dyno. but the others we have done we have tested post install and the HP gains remained.

May 17, 2021 | 01:39 PM

#13

MarioC8

Pro

Joined: Jan 2021

Posts: 649

Likes: 576

From: South Florida

Quote:

Originally Posted by Joe@CPR

this car never made it back on our dyno. but the others we have done we have tested post install and the HP gains remained.

Awesome, and are these afr changes anything to worry about? I came from an Evo where afrs are everything, but it seems like these v8s are a bit more flexible in that regard.

Ill probably install an O2 spacer to get rid of the Check Engine Light. And will hope that the smell isn’t too bad...

Thanks for the feedback

May 17, 2021 | 02:28 PM

#14

Cordes Performance Racing

Thread Starter

Supporting Vendor

Joined: Feb 2009

Posts: 4,421

Likes: 1,430

From: Mesa Az

Quote:

Originally Posted by MarioC8

Awesome, and are these afr changes anything to worry about? I came from an Evo where afrs are everything, but it seems like these v8s are a bit more flexible in that regard.

Ill probably install an O2 spacer to get rid of the Check Engine Light. And will hope that the smell isn’t too bad...

Thanks for the feedback

the oem widebands correct it nicely. stock cam you won't smell much.

May 17, 2021 | 03:27 PM

#15

itsonlyairandfuel

Melting Slicks

Joined: Jun 2001

Posts: 2,265

Likes: 548

Only true test is after a the trims get readjusted with a hour or two of driving. Please recheck after road test. If results repeat, great. Looking forward to the rest of the story.

May 17, 2021 | 03:39 PM

#16

itsonlyairandfuel

Melting Slicks

Joined: Jun 2001

Posts: 2,265

Likes: 548

Also suggest you google C8 lift points, your rear point are too far forward according to

May 17, 2021 | 04:22 PM

#17

MarioC8

Pro

Joined: Jan 2021

Posts: 649

Likes: 576

From: South Florida

Quote:

Originally Posted by itsonlyairandfuel

Also suggest you google C8 lift points, your rear point are too far forward according to https://www.youtube.com/watch?v=vMgh9OcOsVU&t=73s .

I believe they commented on youtube that they tweaked that off-camera.

May 17, 2021 | 04:32 PM

#18

itsonlyairandfuel

Melting Slicks

Joined: Jun 2001

Posts: 2,265

Likes: 548

Just looking to help, keep them out of trouble. never made it to the end of video. Just watched the the wiggle test. Really hoping they do a confirmation of AF ratio.

Reply Subscribe

Reply Share

First
Prev
1 / 1
Next
Last

Forum Jump