1515 Reduced Engine Power
Thread Starter
Le Mans Master
Joined: Feb 2009
Posts: 5,169
Likes: 199
From: Your Sister's Bedroom
1515 Reduced Engine Power
Having a little issue with the YSI/364/3 Bar car we just finished up. It likes to randomly throw the 1515 and go into REP under WOT conditions. Ive posed the question to a few people already, like to get some others opinions. Car has a LS2 intake and TB on it.
Thanks Guys.
Thanks Guys.
Premium Supporting Vendor
Joined: Oct 2004
Posts: 23,599
Likes: 1,224
From: Providing the most proven supercharger kits for your C5/6/7 609-752-0321
Thread Starter
Le Mans Master
Joined: Feb 2009
Posts: 5,169
Likes: 199
From: Your Sister's Bedroom
I seem to remeber THANKING Chris directly in a results thread I posted last week...
http://forums.corvetteforum.com/c5-f...s-to-many.html
I dont throw shots, i make comments!
Now Enlighten Me...
http://forums.corvetteforum.com/c5-f...s-to-many.html
I dont throw shots, i make comments!
Now Enlighten Me...
Last edited by breecher_7; Oct 26, 2011 at 07:09 PM.
Former Vendor
Joined: Nov 2010
Posts: 542
Likes: 0
Two questions: One did your tuner disable the 1514 code ? Because sometimes if the Calc Airflow table is not tuned correctly, I have seen the 1514 pop with the 1515, especially if you are pedaling the car.However, if not... then I have a good idea what it is.
Let me know
Matt
Thread Starter
Le Mans Master
Joined: Feb 2009
Posts: 5,169
Likes: 199
From: Your Sister's Bedroom
So your question is. "is 1514 disabled?" Ill have to look. I believe on the dyno last week it did throw 1514 when we tried to pull it past 6500rpm though. Im not positive though. But right now, its just throwing 1515.
Thanks Matt
Ill shoot you the tune file later today if you give me a email address.
Thanks Matt
Ill shoot you the tune file later today if you give me a email address.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
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
Premium Supporting Vendor
Joined: Oct 2004
Posts: 23,599
Likes: 1,224
From: Providing the most proven supercharger kits for your C5/6/7 609-752-0321
If you did not max out your airflow table, or 0068, you usually get a 1514/0068 code. You most likely (of course I'm not in front of the car or seen logs) are over powering your TB from the boost level of the YSI, which puts the car in REP.
Thats why many of our higher boost cars have had to switch to a cable TB, the electric motor on the TB simply cant hold itself in place. Before you make any drastic changes like that, I would try replacing the TB if you have one handy, but thats what has been the fix for most of the cars in your shoes.
The joys of making a lot of power..
Thread Starter
Le Mans Master
Joined: Feb 2009
Posts: 5,169
Likes: 199
From: Your Sister's Bedroom
If you did not max out your airflow table, or 0068, you usually get a 1514/0068 code. You most likely (of course I'm not in front of the car or seen logs) are over powering your TB from the boost level of the YSI, which puts the car in REP.
Thats why many of our higher boost cars have had to switch to a cable TB, the electric motor on the TB simply cant hold itself in place. Before you make any drastic changes like that, I would try replacing the TB if you have one handy, but thats what has been the fix for most of the cars in your shoes.
The joys of making a lot of power..
Thats why many of our higher boost cars have had to switch to a cable TB, the electric motor on the TB simply cant hold itself in place. Before you make any drastic changes like that, I would try replacing the TB if you have one handy, but thats what has been the fix for most of the cars in your shoes.
The joys of making a lot of power..
Premium Supporting Vendor
Joined: Oct 2004
Posts: 23,599
Likes: 1,224
From: Providing the most proven supercharger kits for your C5/6/7 609-752-0321
Thread Starter
Le Mans Master
Joined: Feb 2009
Posts: 5,169
Likes: 199
From: Your Sister's Bedroom
So i just found out the 1514 code WAS turned off in the tune.. Gonna turn it back on and see what happens from there. Airflow table IS maxed out.
Thanks for the help so far doug, ill keep you updated on what happens.
Wish I had a spare LS2 TB, have LS3 units, just no LS2's.....
Thanks for the help so far doug, ill keep you updated on what happens.
Wish I had a spare LS2 TB, have LS3 units, just no LS2's.....
Premium Supporting Vendor
Joined: Oct 2004
Posts: 23,599
Likes: 1,224
From: Providing the most proven supercharger kits for your C5/6/7 609-752-0321
So i just found out the 1514 code WAS turned off in the tune.. Gonna turn it back on and see what happens from there. Airflow table IS maxed out.
Thanks for the help so far doug, ill keep you updated on what happens.
Wish I had a spare LS2 TB, have LS3 units, just no LS2's.....
Thanks for the help so far doug, ill keep you updated on what happens.
Wish I had a spare LS2 TB, have LS3 units, just no LS2's.....
The LS3 will give you it's own set of problems At WOT..
Even with that code off, it will still go into REP if the parameters are met.
Le Mans Master
Joined: Aug 2005
Posts: 5,375
Likes: 328
From: CA.
St. Jude Donor '13-'14-'15
You can't just turn the p1514 or p1515 codes OFF or set them to "not reported or no mill"
this just keeps the codes from turning on burt does not change anything that is causing your problems or "reduced engine power-"
To correctly eliminate the codes and reduced power modes you MUST alter the "predicted airflow table " in your ECM--In EFILVE it's table C6101---depending on your mods and RWHP all you need to do is ADD about 25% to the entire table---(for apprx 400 RWHP)
More HP add more %----
this just keeps the codes from turning on burt does not change anything that is causing your problems or "reduced engine power-"
To correctly eliminate the codes and reduced power modes you MUST alter the "predicted airflow table " in your ECM--In EFILVE it's table C6101---depending on your mods and RWHP all you need to do is ADD about 25% to the entire table---(for apprx 400 RWHP)
More HP add more %----
Thread Starter
Le Mans Master
Joined: Feb 2009
Posts: 5,169
Likes: 199
From: Your Sister's Bedroom
I have a new LS2 throttle body in route, hopefully that is part of the problem. It may sit till spring though till we have a chance to play with it again though. Ill keep everyone updated and thanks!
Intermediate
Joined: Jul 2013
Posts: 26
Likes: 5
From: Palo Alto California