Added Dynatech long tubes, results within.
Team Owner
Joined: Mar 1999
Posts: 22,025
Likes: 192
From: At the beach in little Rhody
Originally Posted by CNB
I have the graphs but there is no file extension so I do not know what program to open them with.
Safety Car
Joined: Dec 2001
Posts: 4,295
Likes: 2
From: Indianapolis Indiana
Cruise-In III Veteran
Cruise-In IV Veteran
Pup cats didn't appear until 01 unless your car was sold in california.
Add me to the list of those who think your stock dyno was way high. I have a friend with a 2000 FRC with I/E and he made 305rwhp this past weekend.
Add me to the list of those who think your stock dyno was way high. I have a friend with a 2000 FRC with I/E and he made 305rwhp this past weekend.
Pro
Joined: Jun 2003
Posts: 702
Likes: 0
From: Castle Rock Co
don't know anything about these headers. However here is a topic with the same headers. He got a whole 2 hp out of the headers????
Something is wrong and people don't seem to like them at all.
http://forums.corvetteforum.com/showthread.php?t=960193
If I was you I would go with LG Headers. Doing it right the first time is always a plus.
This is what I'm talking about.
There is no magic that can make one long tube header outperform another set by 20HP, it just does not happen, unless one set is absolute crap, which the Dynatechs are not.
Something is wrong and people don't seem to like them at all.
http://forums.corvetteforum.com/showthread.php?t=960193
If I was you I would go with LG Headers. Doing it right the first time is always a plus.
This is what I'm talking about.
There is no magic that can make one long tube header outperform another set by 20HP, it just does not happen, unless one set is absolute crap, which the Dynatechs are not.
Racer
Joined: May 2001
Posts: 304
Likes: 0
From: Bryn Mawr PA
My 99 FRC w/Blackwing, Xpipe, stock mufflers and an MAF-T pulled 326hp/330torque after four pulls on the dyno. Used the MAF-T to fine tune the WOT mixture strength, timing and added 10 hp (to 326)
Logging w/Autotap showed the LTFT to be optimal at -.885 with O2 sensors reading midway between lean and rich.
I think the 99 and 2000 FRC have good potential with realtively minor mods.
Logging w/Autotap showed the LTFT to be optimal at -.885 with O2 sensors reading midway between lean and rich.
I think the 99 and 2000 FRC have good potential with realtively minor mods.
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Team Owner
Joined: Mar 1999
Posts: 22,025
Likes: 192
From: At the beach in little Rhody
Your stock curve, at about 4,200 RPM looks like it had some spark knock and the timing was taken out. Also, the headers seem to be losing it at the upper RPM with the curve sloping down. Mine is flat in that area of the curve, as your stock curve is. Looks like about a 15 HP gain at 4,700 RPM. Your stock curve is to some degree like mine was, and doesn't show much gain down low. But I had awful spark knock and it was killing me once it started. You seem to be a little on the lean side in the upper RPM range as well, at least according to the tuner I used. And it appears to be quite lean between 3K and 4K RPM.
Thread Starter
Drifting
Joined: Jul 2004
Posts: 1,663
Likes: 16
From: DFW Texas
I noticed the air/fuel is messed up. It is lean and should be much more flat. I think the guy who did my tune did a half *** job. I'm having my original tuner look at it tomorrow. It will be interesting to see what he says. I wish I had gone to him first but I could not get ahold of him.
Melting Slicks
Joined: Sep 2002
Posts: 2,329
Likes: 0
Have '00, A4 coupe: blackwing and bridge: corsa indy's & x-pipe: 3.42 diff with hardened shaft. That's it: RwHp: 304 hp:
Will be adding Kook's 1 3/4 into x-pipe + high-flow cats assembly feeding through the corsa's. Will see what it does with and without tune.
Will be adding Kook's 1 3/4 into x-pipe + high-flow cats assembly feeding through the corsa's. Will see what it does with and without tune.
Safety Car
Joined: Jul 2001
Posts: 3,667
Likes: 0
From: TurtleCreek Twp Ohio
Cruise-In III Veteran
Originally Posted by BQuicksilver
Pup cats didn't appear until 01 unless your car was sold in california.
Add me to the list of those who think your stock dyno was way high. I have a friend with a 2000 FRC with I/E and he made 305rwhp this past weekend.
Add me to the list of those who think your stock dyno was way high. I have a friend with a 2000 FRC with I/E and he made 305rwhp this past weekend.
Thread Starter
Drifting
Joined: Jul 2004
Posts: 1,663
Likes: 16
From: DFW Texas
I had the tune looked at today by my original tuner (different guy who did not do the header tune) and apparently it was a crappy tune. I have corrected that and will try to get to the dyno soon.
Thread Starter
Drifting
Joined: Jul 2004
Posts: 1,663
Likes: 16
From: DFW Texas
He made a lot of changes. Part throttle response is much better. He also replaced my idle tables from 2001 & up. He did pull some timing so it is now at 26* instead of 28*. He changed fuel delivery and a few other things. Today was warmer then the last time I drove the car so wot seemed about the same. Torque feels stronger then before. I wonder what the dyno will show.
