DYNO - Disappointed Big Time!
Thread Starter
Team Owner
Joined: Feb 2001
Posts: 62,195
Likes: 28
Cruise-In II Veteran
St. Jude Donor '03-'04-'05-'06-'07-'08-'09-'10-'11-'12-'13-'14-'15-'16-'17-'18-'19
DYNO - Disappointed Big Time!
EDIT: TO CLARIFY - TODAY'S DYNO WAS NOT AT A&A
There was ANOTHER DYNO DAY IN SAN DIEGO......
http://forums.corvetteforum.com/show....php?t=1012036
I never meant to imply I left A&A like this.......
-------------------------------------------------------------------
It was dyno day here in SoCal.....I've been looking forward to this with my new mods, which are LT headers, X pipe, Vararam (all installed by A&A) as well as Borla Singers (installed by me). Wow....what a disappointment.
My new numbers from today are 304.9 rwhp and 291.4 rwtq.
My old numbers from November, BONE STOCK were 296.5 rwhp and 305.3 rwtq.
How in the hell did I only gain 8 rwhp and LOSE 14 rwtq from my mods???? I was really expecting 325/325....even without a tune. And Andy even told me I shouldn't really even need one with these minor mods.
One other thing.....I (or A&A to be more accurate) also changed gears from the stock 3.42's to 4.10's. Now I've seen arguments where this can cost you numbers on a dyno, but even if it is true, not THAT much.
Here's a link to my current dyno.....
http://nelsonresidence.com/downloads/march05dyno.jpg
(this is all I have now....will get more detailed results like the old dyno in a couple of days....)
Here's a link to my old dyno....(better format.....more details)
http://www.dynoperformance.com/searc...ils.php?ID=779
This is the exact same dyno, the exact same shop, very similar temp/conditions, etc.....
Anybody got any suggestions? (other than the obvious "you need a tune").......
I know Andy is getting a call on Monday.....that's for sure.....
This is NOT making me happy.....
Oh....and my car is a '99 MN6.
There was ANOTHER DYNO DAY IN SAN DIEGO......
http://forums.corvetteforum.com/show....php?t=1012036
I never meant to imply I left A&A like this.......
-------------------------------------------------------------------
It was dyno day here in SoCal.....I've been looking forward to this with my new mods, which are LT headers, X pipe, Vararam (all installed by A&A) as well as Borla Singers (installed by me). Wow....what a disappointment.
My new numbers from today are 304.9 rwhp and 291.4 rwtq.
My old numbers from November, BONE STOCK were 296.5 rwhp and 305.3 rwtq.
How in the hell did I only gain 8 rwhp and LOSE 14 rwtq from my mods???? I was really expecting 325/325....even without a tune. And Andy even told me I shouldn't really even need one with these minor mods.
One other thing.....I (or A&A to be more accurate) also changed gears from the stock 3.42's to 4.10's. Now I've seen arguments where this can cost you numbers on a dyno, but even if it is true, not THAT much.
Here's a link to my current dyno.....
http://nelsonresidence.com/downloads/march05dyno.jpg
(this is all I have now....will get more detailed results like the old dyno in a couple of days....)
Here's a link to my old dyno....(better format.....more details)
http://www.dynoperformance.com/searc...ils.php?ID=779
This is the exact same dyno, the exact same shop, very similar temp/conditions, etc.....
Anybody got any suggestions? (other than the obvious "you need a tune").......
I know Andy is getting a call on Monday.....that's for sure.....
This is NOT making me happy.....
Oh....and my car is a '99 MN6.
Last edited by 84zz4vette; Mar 5, 2005 at 08:59 PM.
Supporting Tuner
Joined: Sep 2004
Posts: 51,896
Likes: 39
From: ================== Houston, Texas www.englandgreen.com ================== Necessary Evil™ __________
CI 6-7-8-9-10 Veteran
St. Jude Donor '05-'06-'07-'08-'09-'10-'11-'12-'13-'14
Something is not right in Dodge. You are correct - those are terrible numbers!!
You should be at 340+ with those mods. Is your car pulling to redline? Slipping clutch? Running really rich? Any indication at all why it proformed so poorly???
EG
You should be at 340+ with those mods. Is your car pulling to redline? Slipping clutch? Running really rich? Any indication at all why it proformed so poorly???
EG
Thread Starter
Team Owner
Joined: Feb 2001
Posts: 62,195
Likes: 28
Cruise-In II Veteran
St. Jude Donor '03-'04-'05-'06-'07-'08-'09-'10-'11-'12-'13-'14-'15-'16-'17-'18-'19
Originally Posted by azmusclecar
Did your Hood Seal come off?
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
Thread Starter
Team Owner
Joined: Feb 2001
Posts: 62,195
Likes: 28
Cruise-In II Veteran
St. Jude Donor '03-'04-'05-'06-'07-'08-'09-'10-'11-'12-'13-'14-'15-'16-'17-'18-'19
Originally Posted by EnglandGreen
Something is not right in Dodge. You are correct - those are terrible numbers!!
You should be at 340+ with those mods. Is your car pulling to redline? Slipping clutch? Running really rich? Any indication at all why it proformed so poorly???
EG
You should be at 340+ with those mods. Is your car pulling to redline? Slipping clutch? Running really rich? Any indication at all why it proformed so poorly???
EG
My clutch is pretty weak....but it doesn't feel like it's slipping.
Race Director
Joined: Jan 2003
Posts: 14,285
Likes: 0
From: Houston, Tx Got traction?
CI 5-6-7-8-9-10 Veteran
St. Jude Donor '07-'08
I lost 10rwhp when i went from 3.42 to 3.73. You might want to check your sources on how much those 4.10's just cost you on the dyno. If you're really worried about it, get yourself dyno tuned.
Chris
Chris
Team Owner
Joined: Feb 2003
Posts: 37,329
Likes: 12
From: Plano Texas
CI 6-7-8-9 Veteran
CI-VI Car Show Winner
St. Jude Donor '07-'08-'09-'10-'11-'12-'13
Originally Posted by 84zz4vette
My old numbers from November, BONE STOCK were 296.5 rwhp and 305.3 rwtq.
How in the hell did I only gain 8 rwhp and LOSE 14 rwtq from my mods???? I was really expecting 325/325....even without a tune. And Andy even told me I shouldn't really even need one with these minor mods.
One other thing.....I (or A&A to be more accurate) also changed gears from the stock 3.42's to 4.10's. Now I've seen arguments where this can cost you numbers on a dyno, but even if it is true, not THAT much.
.
How in the hell did I only gain 8 rwhp and LOSE 14 rwtq from my mods???? I was really expecting 325/325....even without a tune. And Andy even told me I shouldn't really even need one with these minor mods.
One other thing.....I (or A&A to be more accurate) also changed gears from the stock 3.42's to 4.10's. Now I've seen arguments where this can cost you numbers on a dyno, but even if it is true, not THAT much.
.
1. There will be a loss of RWHP with the change in gears.
2. You have a 99, but do not indicate the mileage. If it is greater than 40k, and assuming you have never replaced the slave, it is extremely likely that you have some HP loss from that fact alone.
Race Director
Joined: Oct 1999
Posts: 17,710
Likes: 1,219
From: Phila PA, Bonita Springs FL
Dude..
I don't know why nobody else has chimed in here,
I know EXACTLY what the problem is..
You said "fuel is a little rich @11.7 and was 11.3"
Bro, you're f'n PIG RICH YOU FAT BASTARD!
Your AFR should be with your set up anywhere 12.8-13.2 on the dyno..
Lean that puppy out & that 30+ HP & TQ will be looking you square in the face!
I cannot believe you were left at 11.7 without the operator mentioning that you were PIG RICH & needed at tune...
I am assuming you only paid for a dyno PULL.. to see your #'s..
Now, listen very carefully:
You need to to be TUNED! LS1 Edit on the dyno! & you'll be where you should be!
Do we need to guess what color the exhaust smoke is coming out or your exhaust? Or what it smells like?
I don't know why nobody else has chimed in here,
I know EXACTLY what the problem is..
You said "fuel is a little rich @11.7 and was 11.3"
Bro, you're f'n PIG RICH YOU FAT BASTARD!
Your AFR should be with your set up anywhere 12.8-13.2 on the dyno..
Lean that puppy out & that 30+ HP & TQ will be looking you square in the face!
I cannot believe you were left at 11.7 without the operator mentioning that you were PIG RICH & needed at tune...
I am assuming you only paid for a dyno PULL.. to see your #'s..
Now, listen very carefully:
You need to to be TUNED! LS1 Edit on the dyno! & you'll be where you should be!
Do we need to guess what color the exhaust smoke is coming out or your exhaust? Or what it smells like?
Last edited by YO-EL; Mar 5, 2005 at 07:44 PM.
Team Owner
Joined: Mar 2001
Posts: 21,325
Likes: 3,841
From: small town in S.E Pa. PA
St. Jude Donor '03-'04
Originally Posted by YO-EL
Dude..
I don't know why nobody else has chimed in here,
I know EXACTLY what the problem is..
You said "fuel is a little rich @11.7 and was 11.3"
Bro, you're f'n PIG RICH YOU FAT BASTARD!
Your AFR should be with your set up anywhere 12.8-13.2 on the dyno..
Lean that puppy out & that 30+ HP & TQ will be looking you square in the face!
I cannot believe you were left tuned at 11.7...
Even from 11.3 if your tuner can't get it past 11.7, & up to 12.8-13.2, get another one..
Do we need to guess what color the exhaust smoke is coming out or your exhaust? Or what it smells like?
I don't know why nobody else has chimed in here,
I know EXACTLY what the problem is..
You said "fuel is a little rich @11.7 and was 11.3"
Bro, you're f'n PIG RICH YOU FAT BASTARD!
Your AFR should be with your set up anywhere 12.8-13.2 on the dyno..
Lean that puppy out & that 30+ HP & TQ will be looking you square in the face!
I cannot believe you were left tuned at 11.7...
Even from 11.3 if your tuner can't get it past 11.7, & up to 12.8-13.2, get another one..
Do we need to guess what color the exhaust smoke is coming out or your exhaust? Or what it smells like?
and here I thought he just liked to sniff refrigerant.
Pro
Joined: Dec 2004
Posts: 705
Likes: 0
From: Queens NY
There's definetely something wrong with those numbers. I would have them tune the car. When I did the LS1 edit the first dyno was 282rwhp 323rwtq with my mods (Halltech, x-pipe & Ti's). It was running extremely rich & timing needed adjustment. After the edit I'm currently at 330rwhp & 349rwtq. As you can see even with my minor mods the difference was HUGE.
Race Director
Joined: Oct 1999
Posts: 17,710
Likes: 1,219
From: Phila PA, Bonita Springs FL
Originally Posted by Evil-Twin
This guy is not as dumb as I look..... and here I thought he just liked to sniff refrigerant.
and here I thought he just liked to sniff refrigerant. Startin to make some sense huh??