04caliwrx

iTrader: (6)

but it has 20's of chrome Ed!! got to ride dirty haha, regardless the dyno day had lots of great cars!! I kinda wish I took mine but I don't think I would be happy when it cant back 250whp on that bodybreaker dyno lol. I'll do work on that dyno when I get my e85 tune haha

wombatsauce

iTrader: (7)

Yep.. I forgot to get a copy of Tony's graph. Post that one up! What's interesting is if you look at my graph and you note the dip in the power and torque curve around 3800rpm... What's more interesting to me than that is the bump right before the dip - if you watch the video of one of my runs, you can see what looks like the car going rich for an instant at what seems like right about halfway through the pull. It's a puff of smoke from the tailpipes right around then. Sounds like some tuning is in order!! I tried to see if I can feel that on the way home, but I think I am going to need the front straight at Thunderhill to really tell - it's just not possible to keep my foot in it for more than a second or so on the highway.

Here's my car getting set up when we realized we needed to pull the ABS fuses..



My car's second run - watch the tailpipes about half-way through:



My wheel on the 3rd pull:



Just silly!



Big tires on the rollers.. The combo of tall, new off-road tires and a torque converter made this one somewhat hard to get a reading:



ZR1 on the dyno...



So wicked..



Let me know when we can bring the V8's back!

wombatsauce

iTrader: (7)

Yeah I checked out the dyno forum on one of the 5th Gen Camaro sites and nearly every graph was from a DynoJet, but it seems most of the SS's on there have a CAI and an exhaust of some sort and are putting down around 400whp. I saw some marked as "basline" over 400whp. Most with a CAI and headers or an X-Pipe with a canned tune show DynoJet WinPEP graphs in the 410-440whp range which... Doesn't make sense. Supposedly, a bone stock LS3 SS (the automatics use the L99 which is slightly different and has VTEC, yo!!!1) puts down around 350-360whp on a DynoJet. So my 317/317 is not so hard to believe on the Dynocom unit - but picking up 60whp with an intake and exhaust on an N/A car as one user reported? I guess it's possible but I would really like to see a true baseline on that car from the same dyno. I bet it would show closer to 375-385whp rather than 350-360.....

I remember the last dyno day I was at with a DynoJet. Big numbers make the customers seem really excited, but myself - I raise an eyebrow when I see a bone stock car roll on a dyno and report spec crank hp as it's measured WHP. On that dyno, my '97 WS.6 T/A M6 supposedly put down ~285whp/315lb/ft with only a flowmaster and a 4" Mufflex mainpipe when it was rated at 305/320. Doesn't make sense, but it seems to make ignorant folk stoked. Most of the stock, brand new LS1 cars (this was 1999) were in the 295-320whp range, and one of them rolled over from the dealer with around 200 miles on the odometer.

Just like when a guy at work here saw my graph for the Camaro and shook his head saying "see that's exactly why I don't want to dyno my car - they tell you it's X amount of horsepower but really they are screwing you." I tried to explain drivetrain loss and I think he thinks I am really dumb now.. Heh..



I guess all this really means is I owe it to myself and to further EQ's research to pick up a CAI and some sort of exhaust for my SS...

wombatsauce

iTrader: (7)

Not chromed, painted. Chrome on that much landscape would actually add a few pounds! I asked if I could get smaller wheels when I bought the car but they just laughed at me.

What tripped me out was how the ZR1's wheels shock the crap out of the dyno at-speed. My wheels are the same diameter (though I think the ZR1 wheels are wider). My thought was it was the totally trashed tires on there creating a bad balance situation... On that note, the only thing cooler than seeing the ZR1 was seeing that it gets USED. It's got nearly 10k miles and plenty of track days already..

I wonder what the smallest wheel I can fit on the back is.. I know weight does a lot on the road, but part of me wonders if the heavy wheels wouldn't help to smooth the curve out a little..

wombatsauce

iTrader: (7)

Speaking of heavy wheels... I found the weights.. The front wheels on my car weigh 32lbs, and the rear wheels weigh 34lbs.

EQ Tuning