Increasing compression - Need scan help, please view! - Page 11 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


Performance, Brainstorming & Tuning Talk about modifications, or anything else associated with performance enhancements. Have a new idea for performance/reliability? Post it here. No idea is stupid! (please use Detailing and Appearance for cosmetic ideas)

Reply
 
 
 
Thread Tools Search this Thread
Old 11-27-2005, 05:28 PM   #101
BANNED
 
Join Date: Aug 2002
Posts: 0
Thanks: 0
Thanked 0 Times in 0 Posts
banned3800 is on a distinguished road
Default

Quote:
Originally Posted by 95naSTA
For a stock PCM that sounds right on the money. I know jr's3800 had almost the same #'* for his 95 series 2. Although he isn't OBD2, i'm assuming it'* the same.
Yep I was 19* advance at WOT....

My 91 with lower compression was doing 24* at WOT...

__________________
Best Car Insurance | Auto Protection Today | FREE Trade-In Quote
banned3800 is offline   Reply With Quote
Old 11-27-2005, 08:08 PM   #102
Guest
Posts like a Northstar
 
Join Date: Nov 2004
Posts: 584
Thanks: 0
Thanked 0 Times in 0 Posts
ssei1995 is on a distinguished road
Default

Did you degreed the new cam?
ssei1995 is offline   Reply With Quote
Old 11-28-2005, 02:55 AM   #103
Senior Member
True Car Nut
Thread Starter
 
Join Date: Jun 2004
Location: Glendale, AZ
Posts: 3,459
Thanks: 0
Thanked 1 Time in 1 Post
big_news_1 is on a distinguished road
Default

Quote:
Originally Posted by jr's3800
Quote:
Originally Posted by 95naSTA
For a stock PCM that sounds right on the money. I know jr's3800 had almost the same #'* for his 95 series 2. Although he isn't OBD2, i'm assuming it'* the same.
Yep I was 19* advance at WOT....

My 91 with lower compression was doing 24* at WOT...
Maybe we have a miscommunication. The timing is Negative 24*. However, I think it'* learning. We romped on it and the timing actually went into the positive side. It pulls pretty hard in the top end and we need to adjust the shift points to maybe 6k or so. We will get the vacuum dohickey tomorrow and install that so we can play around with it.

This is Doug, but Ben endorses this message.
big_news_1 is offline   Reply With Quote
Old 11-28-2005, 02:55 AM   #104
Senior Member
True Car Nut
Thread Starter
 
Join Date: Jun 2004
Location: Glendale, AZ
Posts: 3,459
Thanks: 0
Thanked 1 Time in 1 Post
big_news_1 is on a distinguished road
Default

Quote:
Originally Posted by ssei1995
Did you degreed the new cam?
Yessir. It wouldn't run well otherwise. And oooh god does it run.
big_news_1 is offline   Reply With Quote
Old 11-28-2005, 02:11 PM   #105
Senior Member
True Car Nut
Thread Starter
 
Join Date: Jun 2004
Location: Glendale, AZ
Posts: 3,459
Thanks: 0
Thanked 1 Time in 1 Post
big_news_1 is on a distinguished road
Default

On a side note. The car is getting seemingly stronger. We will need to get those shift points jacked up and get a tune. We want a dyno and we want it now!
big_news_1 is offline   Reply With Quote
Old 11-28-2005, 02:28 PM   #106
Senior Member
True Car Nut
 
95naSTA's Avatar
 
Join Date: Feb 2003
Location: Philly
Posts: 4,508
Thanks: 0
Thanked 0 Times in 0 Posts
95naSTA is on a distinguished road
Default

Quote:
Originally Posted by big_news_1
Quote:
Originally Posted by jr's3800
Quote:
Originally Posted by 95naSTA
For a stock PCM that sounds right on the money. I know jr's3800 had almost the same #'* for his 95 series 2. Although he isn't OBD2, i'm assuming it'* the same.
Yep I was 19* advance at WOT....

My 91 with lower compression was doing 24* at WOT...
Maybe we have a miscommunication. The timing is Negative 24*. However, I think it'* learning. We romped on it and the timing actually went into the positive side. It pulls pretty hard in the top end and we need to adjust the shift points to maybe 6k or so. We will get the vacuum dohickey tomorrow and install that so we can play around with it.

This is Doug, but Ben endorses this message.
Umm thats bad. REAL bad. Are you sure it'* negative?
95naSTA is offline   Reply With Quote
Old 11-28-2005, 11:18 PM   #107
Senior Member
Posts like a Northstar
 
Join Date: Jan 2003
Location: Northern KY
Posts: 511
Thanks: 0
Thanked 0 Times in 0 Posts
Phantom is on a distinguished road
Default

let it go for a couple more days to see if it learns will knows all about the pcm relearning because of changes.
Phantom is offline   Reply With Quote
Old 11-29-2005, 12:27 PM   #108
Senior Member
True Car Nut
Thread Starter
 
Join Date: Jun 2004
Location: Glendale, AZ
Posts: 3,459
Thanks: 0
Thanked 1 Time in 1 Post
big_news_1 is on a distinguished road
Default

Quote:
Originally Posted by 95naSTA
Umm thats bad. REAL bad. Are you sure it'* negative?
Yessir.... timing advance at idle and while cruising is a negative number. However, it goes to the positive side when I reach WOT. We just don't think it'* going far enough into the positive. The car is a little weird right now, so we're going to post scan results shortly.

I purchased the Enhanced GM upgrade for my AutoXray, so now I can see KR, A/F ratio, and a bunch of other stuff. I have no idea if my STFT and LTFT are where they need to be, but we know it'* running pretty lean at times, because yesterday it actually set a CEL with the code "Bank 1, System Too Lean" . The car is parked right now, because I don't want to burn up a piston or anything.

However, we're not getting KR at WOT. We are seeing some KR at low RPM while accelerating under load. It'* crazy, and I'm not sure what to think. The important thing is that we're going to get a scan of the car and post it here, so you tuning gurus can give me an idea of what'* happening. I also believe I have a vacuum leak due to a cracked rubber fitting on the vacuum lines, so it may be contributing to the weirdness.

We will post scan results later today.
big_news_1 is offline   Reply With Quote
Old 11-29-2005, 01:32 PM   #109
Senior Member
True Car Nut
Thread Starter
 
Join Date: Jun 2004
Location: Glendale, AZ
Posts: 3,459
Thanks: 0
Thanked 1 Time in 1 Post
big_news_1 is on a distinguished road
Default

Ok, here'* the deal. My scanner doesn't upload scan data to my PC without buying an extra software package for $90 (which sucks, because the next model after mine came with the software free ). I'm not going to deal with trying to download the software right now, so I'll scan the car then enter all the data manually for you guys to view.

I need to know which parameters should be scanned to get the best idea of what is happening. I figure I'll need STFT, LTFT, MAP sensor, RPM, ignition timing advance, IAT value, O2 value, A/F ratio, and KR.

Anything else?
big_news_1 is offline   Reply With Quote
Old 11-29-2005, 03:00 PM   #110
Senior Member
True Car Nut
Thread Starter
 
Join Date: Jun 2004
Location: Glendale, AZ
Posts: 3,459
Thanks: 0
Thanked 1 Time in 1 Post
big_news_1 is on a distinguished road
Default

I'm sick of this info being buried in 6 pages of mumbo jumbo, so I started a new thread.

http://www.bonnevilleclub.com/forum/...ic.php?t=44237

Thanks!
big_news_1 is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
increasing exhaust flow SPOILEDRED94 Performance, Brainstorming & Tuning 4 03-16-2008 11:45 AM
Increasing Performance on a Budget ernie22golf Performance, Brainstorming & Tuning 5 02-16-2007 10:03 PM
HELP! - Scan Results for L36 w/ cam, high compression big_news_1 Performance, Brainstorming & Tuning 88 12-14-2005 12:53 AM
increasing mpg and a little performance nwtflogan 2000-2005 9 09-14-2005 11:30 AM
Howcome my number of postings isn't increasing? merlin Lounge 6 05-27-2004 08:47 PM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 07:55 PM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.