Forced Induction Superchargers | Turbochargers | Intercoolers

Weird MAP, BOOST leak? supercharged vette log pics inside

Thread Tools
 
Search this Thread
 
Old Jul 29, 2010 | 08:47 AM
  #1  
ttbestas's Avatar
Thread Starter
Teching In
 
Joined: Apr 2007
Posts: 30
Likes: 0
Default Weird MAP, BOOST leak? supercharged vette log pics inside

hi there
still having this problem i cant figure out.



The Map values should be straight line but it isnt. I have changed to procharger race blow off, put bigger pulley with new belt on, pressurised the system, but didnt find any major leaks. The system bleeds off quicly though.
I dont know what else to check...


The car has A&A vortech kit, 317 heads, blower cam, headers...
Reply
Old Jul 29, 2010 | 09:14 AM
  #2  
Gabbiani's Avatar
TECH Apprentice
iTrader: (20)
 
Joined: Apr 2007
Posts: 337
Likes: 6
From: Salem OR
Default

Doesn't look that bad really. Sampling rate for the map plus there are pulses as the air switches which cyl it is going into etc.

Voltage isn't rock steady. Looks normal but this will also affect all readings.

If you are using an air compressor to pressure test it, things will bleed off quick. Past the rings etc. High pressure but fairly low volume compared to a charger.
Reply
Old Jul 29, 2010 | 09:22 AM
  #3  
ttbestas's Avatar
Thread Starter
Teching In
 
Joined: Apr 2007
Posts: 30
Likes: 0
Default

Originally Posted by Gabbiani
Doesn't look that bad really. Sampling rate for the map plus there are pulses as the air switches which cyl it is going into etc.

Voltage isn't rock steady. Looks normal but this will also affect all readings.

If you are using an air compressor to pressure test it, things will bleed off quick. Past the rings etc. High pressure but fairly low volume compared to a charger.
Maybe in this log is not that bad, cause its 3th gear pull, i guess its little worst in 4th. Please also notice my IDC, i have boost referenced FPR and it should be like straight line as well?
My friend thinks that it may be leaky intake valves?
Reply




All times are GMT -5. The time now is 10:57 AM.

story-0
Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?

Slideshow: We take a close look at the ONE and Artidiag 800BT2 diagnostic tools from Topdon and the reasons to buy one over the other.

By Pouria Savadkouei | 2026-05-28 11:05:11


VIEW MORE
story-1
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

Slideshow: The controversial Ferrari F6 swaps its original flat-12 for a Corvette Z06-derived LT4 V8 and sends power to four rear wheels through a custom-built drivetrain.

By Verdad Gallardo | 2026-05-26 18:23:54


VIEW MORE
story-2
7 Most Reliable High-Performance Engines GM Has Ever Built

Slideshow:These GM engines didn't just make huge power, they survived abuse, boost, track days, and six-digit mileage with a reputation for refusing to quit.

By Verdad Gallardo | 2026-05-21 16:45:27


VIEW MORE
story-3
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

Slideshow: This heavily modified 1971 Camaro mixes classic muscle car styling with a fifth-generation Camaro interior and modern LS3 power.

By Verdad Gallardo | 2026-05-12 18:06:42


VIEW MORE
story-4
6 Common C5 Corvette Failures and What's Involved In Repairing Them

Slideshow: From wobbling harmonic balancers to failed EBCMs, these are the issues that define long-term C5 ownership and what repairs typically involve.

By Pouria Savadkouei | 2026-05-07 18:44:57


VIEW MORE
story-5
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

Slideshow: A modern Camaro transformed into a retro icon, this limited-run "Bandit" build blends nostalgia with brute force in a way few revivals manage.

By Verdad Gallardo | 2026-04-21 13:57:02


VIEW MORE
story-6
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Slideshow: Cadillac didn't just crash the high-performance luxury vehicle party, it showed up loud, supercharged, and occasionally a little unhinged...

By Pouria Savadkouei | 2026-04-16 10:05:15


VIEW MORE
story-7
Top 10 Most Powerful Chevy Trucks Ever Made!

Slideshow: Top ten most powerful Chevy trucks ever made

By | 2026-03-25 09:22:26


VIEW MORE
story-8
Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Slideshow: Hennessey has turned the Silverado ZR2 into a 700-hp off-road monster with supercharged V8 power and a limited production run.

By Verdad Gallardo | 2026-03-24 18:57:52


VIEW MORE
story-9
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

Slideshow: A one-off sports car that looks like a vintage Italian exotic-but hides a C6 Corvette underneath-just sold for the price of a new mid-engine Corvette.

By Verdad Gallardo | 2026-03-23 18:53:41


VIEW MORE