C5 Forced Induction/Nitrous C5 Corvette Turbochargers, Superchargers, Centrifugal, Twin Screw & Roots Blowers, Twin Turbo Kits, Intercoolers, Wet & Dry Nitrous Injection, Meth
Sponsored by:
Sponsored by:

Novi Numbers

Thread Tools
 
Search this Thread
 
Old Aug 6, 2007 | 06:06 PM
  #1  
texasz's Avatar
texasz
Thread Starter
Intermediate
 
Joined: Dec 2003
Posts: 40
Likes: 0
From: harlingen tx
Default Novi Numbers

Just got my Novi kit tuned. 1999 M6 which is stock except BB catback. Turns out I am among the low number crowd. Car made 5-6 pounds of boost with 408 rwhp and 411 ft.lbs. torque. Not what I was expecting. Not faulting the kit or the tune, but everyone does not join the 500 rwhp crowd as easily as it sounds.

Last edited by texasz; Aug 9, 2007 at 01:11 PM.
Reply
Old Aug 6, 2007 | 06:51 PM
  #2  
vetterlatethannever's Avatar
vetterlatethannever
Race Director
10 Year Member
 
Joined: Dec 2003
Posts: 12,599
Likes: 1
From: Texas
Default

Was this done on a Mustang dyno by chance?
Reply
Old Aug 6, 2007 | 07:13 PM
  #3  
Warp Factor's Avatar
Warp Factor
Le Mans Master
Supporting Lifetime
Conversation Starter
Liked
Loved
Community Favorite
 
Joined: Oct 2005
Posts: 7,088
Likes: 1,829
From: Metro Detroit Michigan
Default

Something doesn't sound quite right. What was the air temperature?
Torque higher than horsepower is a little odd. Did they only pull to 5500 rpm or something?
With two intake restrictors, my stock engine still makes 8 lbs in the summer, 10 when it's really cold outside.

Last edited by Warp Factor; Aug 6, 2007 at 07:27 PM.
Reply
Old Aug 6, 2007 | 07:28 PM
  #4  
sdnet's Avatar
sdnet
Le Mans Master
Supporting Lifetime
10 Year Member
 
Joined: Aug 2004
Posts: 9,770
Likes: 0
From: Sahuarita AZ
Default

Originally Posted by Warp Factor
Something doesn't sound quite right. What was the air temperature? What rpm did they pull to?
With two intake restrictors, my stock engine still makes 8 lbs in the summer, 10 when it's really cold outside.
I know first hand how much temperature effects dyno results...my Maggie made 422 HP in cool 50 degree NJ weather, but only made 395 HP in hot, humid monoon weather in Phoenix.

So...what kind of dyno? Heat? Humidity?
Reply
Old Aug 6, 2007 | 07:30 PM
  #5  
EG@EnglandGreen's Avatar
0EG@EnglandGreen
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
Default

You should be making around 9psi of boost.

The last 2 cars I dynoed made 547rwhp (ONE BMF) and 553rwhp (Mondaine) respectively

Stephen
Reply
Old Aug 6, 2007 | 07:48 PM
  #6  
Mike04's Avatar
Mike04
Safety Car
20 Year Member
Conversation Starter
All Eyes On Me
 
Joined: Jun 2004
Posts: 4,353
Likes: 22
From: Bella Vista Ca
Default

Have you checked for an air leak between the SC and the intake? Your HP and boost numbers seem too low.
Reply
Old Aug 6, 2007 | 07:55 PM
  #7  
peter pan's Avatar
peter pan
Life Time NCM #2196
Supporting Lifetime
Veteran: Air Force
20 Year Member
Liked
Community Favorite
 
Joined: Sep 2004
Posts: 82,596
Likes: 1,711
From: Converse TX
Default

On the low side for sure, you do still have the stock exhaust on it and if you change to some good Long Tube headers and a catback along with a LS6 intake I bet you will make the 500+ rwhp club and see more boost
Reply
Old Aug 6, 2007 | 08:06 PM
  #8  
FactoryRaceCar's Avatar
FactoryRaceCar
Race Director
Supporting Lifetime Gold
20 Year Member
 
Joined: Nov 2001
Posts: 18,682
Likes: 4
St. Jude Donor '05-'06-'07-'08-'09-'10-'11-'12
Default

Definately low. Something does not add up. Mustang dyno? Any leaks? Plugged cats?
Reply
Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

10 Ugly Corvettes That We Still Kinda Love

 Joe Kucinski
story-1

Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

 Brett Foote
story-2

10 Things Every Corvette Owner Needs (2026 Edition)

 Michael S. Palmer
story-3

8 Most "Only Corvette Owners Understand" Quirks and Problems

 Pouria Savadkouei
story-4

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

 Joe Kucinski
story-5

How Much Horsepower Every Corvette Engine "LOST" in 1972

 Joe Kucinski
story-6

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

 Michael S. Palmer
story-7

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

 Joe Kucinski
story-8

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

 Joe Kucinski
story-9

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

 Verdad Gallardo
Old Aug 6, 2007 | 08:13 PM
  #9  
chriswtx's Avatar
chriswtx
Le Mans Master
20 Year Member
Conversation Starter
All Eyes On Me
Top Answer: 1
 
Joined: Feb 2002
Posts: 5,970
Likes: 20
From: San Marcos Texas
Default

The boost is way too low. You have a boost leak somewhere...You should make around 8psi of boost...Something is wrong. Double check everything including the intake manifold bolts...
Reply
Old Aug 6, 2007 | 08:44 PM
  #10  
Warp Factor's Avatar
Warp Factor
Le Mans Master
Supporting Lifetime
Conversation Starter
Liked
Loved
Community Favorite
 
Joined: Oct 2005
Posts: 7,088
Likes: 1,829
From: Metro Detroit Michigan
Default

Originally Posted by chriswtx
The boost is way too low. You have a boost leak somewhere...You should make around 8psi of boost...Something is wrong. Double check everything including the intake manifold bolts...
And check proper operation of the blow-off valve. An intake restriction could do the same thing. Did someone re-oil the air filter? (it comes already oiled)
If that's the case, it will eventually fix itself, but then your tune will no longer be right and your engine's at risk.
Reply
Old Aug 6, 2007 | 09:00 PM
  #11  
Scubanme's Avatar
Scubanme
Melting Slicks
10 Year Member
 
Joined: May 2003
Posts: 2,851
Likes: 1
From: San Bruno Ca
Default

Something is not right, check for leaks. Make sure you are getting enough fuel pressure.

Reply
Old Aug 6, 2007 | 09:12 PM
  #12  
vetterlatethannever's Avatar
vetterlatethannever
Race Director
10 Year Member
 
Joined: Dec 2003
Posts: 12,599
Likes: 1
From: Texas
Default

Reply
Old Aug 9, 2007 | 01:10 PM
  #13  
texasz's Avatar
texasz
Thread Starter
Intermediate
 
Joined: Dec 2003
Posts: 40
Likes: 0
From: harlingen tx
Default

Thanks for the suggestions. Sounds lilke it may have been a combination of belt tension, stock exhaust manifolds and clogged cats. Going to recheck for boost leaks, install AR headers, hi flow cats and x pipe then head back for re-tune. Will post up new numbers when done.
Reply
Old Aug 9, 2007 | 05:17 PM
  #14  
DOUG @ ECS's Avatar
DOUG @ ECS
Premium Supporting Vendor
20 Year Member
Liked
Loved
Community Favorite
 
Joined: Oct 2004
Posts: 23,599
Likes: 1,225
From: Providing the most proven supercharger kits for your C5/6/7 609-752-0321
Default

Originally Posted by texasz
Thanks for the suggestions. Sounds lilke it may have been a combination of belt tension, stock exhaust manifolds and clogged cats. Going to recheck for boost leaks, install AR headers, hi flow cats and x pipe then head back for re-tune. Will post up new numbers when done.
Let me know if we can help in any way, there is definitely something very wrong there. I would look at belt tension first since the TQ is higher than the hp. It's probably holding on the low end, making some tq, then slipping and losing all the hp. Like others have said, 5-6#'s is not going to cut it, get your exhaust done and belt tightened and you will be in the 500+ club like everyone else.
Reply

Get notified of new replies

To Novi Numbers





All times are GMT -4. The time now is 11:22 AM.

story-0
10 Ugly Corvettes That We Still Kinda Love

Slideshow: 10 ugly Corvettes that we still kinda love.

By Joe Kucinski | 2026-06-03 10:34:17


VIEW MORE
story-1
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

A lot of money has changed hands at the online auction house over the years.

By Brett Foote | 2026-06-03 10:21:50


VIEW MORE
story-2
10 Things Every Corvette Owner Needs (2026 Edition)

Slideshow: 10 great gifts Corvette enthusiasts actually want for Father's Day!

By Michael S. Palmer | 2026-06-03 15:43:40


VIEW MORE
story-3
8 Most "Only Corvette Owners Understand" Quirks and Problems

Slideshow: These are the quirks, annoyances, and oddly lovable problems that every Corvette owner eventually learns to live with.

By Pouria Savadkouei | 2026-05-28 09:31:39


VIEW MORE
story-4
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

Slideshow: 10 reasons why the C6 Z06 is still a performance benchmark after 20 years.

By Joe Kucinski | 2026-05-27 17:20:09


VIEW MORE
story-5
How Much Horsepower Every Corvette Engine "LOST" in 1972

Slideshow: How much horsepower every Corvette engine lost in 1972.

By Joe Kucinski | 2026-05-27 16:54:53


VIEW MORE
story-6
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

Slideshow: How to Protect A Convertible Top: 10 DOs & DON'Ts

By Michael S. Palmer | 2026-04-03 00:00:00


VIEW MORE
story-7
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

Slideshow: The 10 most explosive Corvettes ever built based on power-to-weight ratio.

By Joe Kucinski | 2026-05-20 07:23:03


VIEW MORE
story-8
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

Slideshow: From C1 to C8 we compare every Corvette generation by the numbers.

By Joe Kucinski | 2026-05-12 16:54:12


VIEW MORE
story-9
8 Coolest Corvette Pace Cars (and Replicas) of All Time

Slideshow: Some Corvette pace cars became collectible legends, while others perfectly captured the look and attitude of their era.

By Verdad Gallardo | 2026-05-11 09:50:51


VIEW MORE