Dyno'd My A&A P1SC kit yesterday 603/482-now have lots of questions!
For starters my car is a 02 Z06, F7 cam( 224/230 114+4) Stock 317 heads milled to 69.5cc( 9.85CR), 60lb inj, LPE pump, KB BAP, SW headers going into factory 02 Z06 cats and exiting a GHL catback. Pulley is a 4.10 boost was around 7-9 and air temps were around 80 degrees( it was humid).
Anyway car made a best of 606 but I settled on a 603/483 rwhp. I'm happy for sure but I have a few questions. I logged the runs via HPT and had my Dynojet wideband commander permantely hooked up with the gauge in the pillar. My Histogram show'd a AFR of 11.2 across the board the Dyno show'd 10.1 to 6000 then it rose to 11.1 by 6500. My Histogram show'd it rise to 12.1 at 6500. What sensor is the accurate one? The dyno is reading at the tailpipe after my factory cats where my WBC is reading before the cat. We made a pull with my buddies 99 mustang and his LM1 read 11.9 while the Dyno read 11.7-he has no cats. Anyway for whatever reason the car liked the AFR right there cause that's where it made the most power. But still I would like to know which reading to trust.
Second question was the torque-I was a bit disapointed-I'm thinking about dumping my factory cats to and running a 3" Dr.Gas X-pipe right after the cats. Do you think that would help my torque jump over 500? I played with timing and fuel but i didn't get much response from the torque-or what about some Hi-flow cats like the Dynotech's or Random's or should i just dump them alltogether?
Third question is the airline that goies from my valvecover to my blower inlet. I put a small air water seperater inline but when the car is under boost it fills up fast from the blower creating a vacuum. I need to vent this to the atmospshere-I got a Metco Valve cover breather but It won't fit under my stock hood-does anyone have any other suggestions. My PCV line has a air water seperater too and a one-way check valve and it ssems to be working fine. Just need to figure out someway to hook up a breather?
I have my graph saved in a PDF file-for some reason that was the only way I was able to save it. I can email to someone if they care to host it. Oh pulley was a 4.10 and boost was around 7-9psi, air temps rose from 80 at the beginning of the pull to 109 at the end of the pull-meth is going on next.
Any inputs or suggestions are welcomed-thanks guys!
Nice numbers, but something is killing your torque!
This is just a guess, but maybe when they're reading from the exhaust, the COT (Converter Over Temp) setting might be making the richer reading. This dumps extra fuel through the cats to cool them off. Is their WB calibrated for the exhaust (after cats).
Maybe you could try some test tubes and drop the cats for a dyno run and shut off COT using your software. Like I said, it's just a guess, but I'd ask your tuner anyway or pm Nick Yoskin (because he's pretty close to a tuning genius with HP Tuners ).
I am the tuner! The car is reading 11.2 before the cats-after the cats the wideband is showing 10.1-so I'm leaning toward the reading from my wideband( Dynojet Wideband Commander). The COT is turned off. I also dyno's a 99 GT with a Novi the same night-it showed 11.9 on the LM-1 and 11.7 at the tailpipe-this car had no cats. I'm thinking my torque is hurting from 2 things-lack of compression-I have 9.85 since my pistons are flycut and i'm running 69.5cc milled 317 heads not th standard issue 243 64cc LS6 heads which net a 10.5 or the CD 241 heads which are 66cc for a 10.2. I did this for safety sake. My only concern witht he torque is recovery between shifts when drag racing. I was thinking of running a smaller pulley with a restricter plate-but I don't want to push the stock longblock too much. If Nick Yoskin can chime in i can email him my HPT dyno log so he can look at it.
Location: Elmhurst, IL (West Suburb of Chicago) & Home of MEGA Horsepower
Most now know that the stock Z06 cam makes for a KILLER blower cam and I just wonder what your numbers would be with your stock Z06 cam and the numbers made in my sig is with my 100% stock LS6 motor with headers and a good tune (an no alky) at 10 or so lbs of boost!!
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2006 Black C6 Z06, black powder coated rims, CAI; B&B Bullet Exhaust, and of course 427 Badges ; Mopar Jimmy is back with a daily driver 2008 Dodge Challenger, 450hp Hemi SRT8, runs 12.7s with bolt ons, & a mean, Ralleye Green, 1969 Plymouth Road Runner machine, 600hp 505 ci, black steel wheels & black fiberglass 6-pack lift off hood. Thanks and Praise to GOD!
Last edited by Mopar Jimmy; 07-03-2006 at 12:10 AM.
The Cam is killing torque.The timing should be 22-24 degree's in the midrange.If it is the Cam is the culprit.If you run the timing low like 16-18 degree's across the mid-you need more timing.
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2011 Camaro SS ,synergy green -shop car
ARH headers,intake,Cam ect so far. 11.66 at 116mph weighing 4065lbs.
Old car-2002 Electron blue C5
Z06 catback,Edit tuned.
A+A P1 kit,Kook longtubes
507hp/477tq
2005 Avalanche,SOM,Corsa,tuned ,Single turbo kit 450hp/475tq at 7lbs of boost.
1999 Trans Am -420ci C5R motor -daily driver -10.2 at 130mph NA
Slowhawk when you say midrange are you talking 3500-4500? Alos if I bump it up to 22 say in the midrange do I just drop it down to 18 or blend it in? Right now at 3200 it's at 23 .8 g/cyl, 20 at 3600, then 18 from 4000 to 6400 then drops to 15 after that. Your input is greatly
appreciated bro!
For starters my car is a 02 Z06, F7 cam( 224/230 114+4) Stock 317 heads milled to 69.5cc( 9.85CR), 60lb inj, LPE pump, KB BAP, SW headers going into factory 02 Z06 cats and exiting a GHL catback. Pulley is a 4.10 boost was around 7-9 and air temps were around 80 degrees( it was humid).
Anyway car made a best of 606 but I settled on a 603/483 rwhp.
at 7-9 PSI with lower compression heads, 490 rwtq sounds just about right to me.
You can probably adjust your fueling and timing to hit that 500 rwtq mark. i think your timing values could come up slightly (keep a good eye on KR!) at all points you metioned.
Slowhawk when you say midrange are you talking 3500-4500? Alos if I bump it up to 22 say in the midrange do I just drop it down to 18 or blend it in? Right now at 3200 it's at 23 .8 g/cyl, 20 at 3600, then 18 from 4000 to 6400 then drops to 15 after that. Your input is greatly
appreciated bro!
That timing is low in the mid.The best way is to change it on the dyno in 2 degree incriment's.
Just roll that out. With 7lbs you might even need more with that compression/Cam setup. Just run A/F betwwen 11-1 and 11.5-1.
You'll know when you add 2 degree's and power jumps 30-40rwhp.
Had a Z06 z few weeks ago that I put a base map in.The car made the same power as stock(had blower) Added 8 degree's of timing and it gained 140rwhp.
__________________
2011 Camaro SS ,synergy green -shop car
ARH headers,intake,Cam ect so far. 11.66 at 116mph weighing 4065lbs.
Old car-2002 Electron blue C5
Z06 catback,Edit tuned.
A+A P1 kit,Kook longtubes
507hp/477tq
2005 Avalanche,SOM,Corsa,tuned ,Single turbo kit 450hp/475tq at 7lbs of boost.
1999 Trans Am -420ci C5R motor -daily driver -10.2 at 130mph NA
What about venting the system guys. Under boost the catchcan from the valvecover to airfilter fills up quick. I was thinking about getting another passenger side valvecover and venting the right and left valvecover to a mini-Jazz one pint Breather tank-do you think that would be acceptable-then just plug the line at the airfilter.
Corvette Store
Dyno'd My A&A P1SC kit yesterday 603/482-now have lots of questions!
).
; Mopar Jimmy is back with a daily driver 2008 Dodge Challenger, 450hp Hemi SRT8, runs 12.7s with bolt ons, & a mean, Ralleye Green, 1969 Plymouth Road Runner machine, 600hp 505 ci, black steel wheels & black fiberglass 6-pack lift off hood. Thanks and Praise to GOD!
