went to the dyno.... very upset
05-27-2006, 09:58 PM
#28
Senior Member
Join Date: 09-01-05
Location: Canada
Posts: 1,589
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by campo165
IMO dont waste your money with Z rated...thats a waste for your car...get W rated, probably a lot cheaper and more logical. Z rated is for cars that can go 160+ i believe. You know, you are probably better off doing a 3rd gear pull and maybe letting it shift because if you floor it, it SHOULD run to the rev limiter.
05-27-2006, 10:11 PM
#31
Senior Member
Join Date: 12-15-05
Location: Orlando, FL
Posts: 6,216
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by mi6_
Z-rated tires are any tire with a speed rating of at least 149 MPH. The SS/SC is W-rated, meaning our tires are speed rated up to 169 MPH (so we also carry the Z rating). Tire companies are dropping the use of the "Z" rating because of the confusion this creates.
so you are saying they overlap...word...learn something new everyday, assuming i am understanding your comment correctly. All i know is my dads car is too fast for W rated tires, so he has z
05-27-2006, 10:20 PM
#32
Member
Join Date: 01-23-05
Location: texas
Posts: 329
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by biohazard
click to make biggerHoly ****, your making 155ft lbs to the wheels at 3320rpm. That is just amazing, congrats dude, i would be very proud of that. Of course if this graph is that is truly an outstanding number.
05-27-2006, 10:32 PM
#34
Senior Member
Join Date: 07-29-05
Location: AZ
Posts: 7,926
Likes: 0
Received 0 Likes
on
0 Posts
I would take your car somewhere else, that is obviously not a legit dyno read.
There is no way in hell you are making 25 less hp to the wheels and 20 more ft lbs of tq at the wheels. The people at that shop did not know how to run your auto on the dyno, I've heard of autos on here before not giving accurate readings.
There is no way in hell you are making 25 less hp to the wheels and 20 more ft lbs of tq at the wheels. The people at that shop did not know how to run your auto on the dyno, I've heard of autos on here before not giving accurate readings.
05-27-2006, 10:41 PM
#35
Get low
Thread Starter
Join Date: 03-29-06
Location: Crystal lake, IL
Posts: 3,476
Likes: 0
Received 0 Likes
on
0 Posts
they had a couple ppl doing it and all got the same... the Tq is right... cobalts have the highest Tq rating in their class.... the hp is off because of my fuel cutoff ... look at the RPMs, you hit the Tq peak before Hp thats y its so much higher than the Hp..... anyone wanna back me up... not saying your wrong, i just think wut i saying is right lol
05-27-2006, 10:50 PM
#36
Member
Join Date: 01-23-05
Location: texas
Posts: 329
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by IonNinja
I would take your car somewhere else, that is obviously not a legit dyno read.
There is no way in hell you are making 25 less hp to the wheels and 20 more ft lbs of tq at the wheels. The people at that shop did not know how to run your auto on the dyno, I've heard of autos on here before not giving accurate readings.
There is no way in hell you are making 25 less hp to the wheels and 20 more ft lbs of tq at the wheels. The people at that shop did not know how to run your auto on the dyno, I've heard of autos on here before not giving accurate readings.
05-27-2006, 10:52 PM
#37
Get low
Thread Starter
Join Date: 03-29-06
Location: Crystal lake, IL
Posts: 3,476
Likes: 0
Received 0 Likes
on
0 Posts
05-27-2006, 11:14 PM
#38
Senior Member
Join Date: 10-08-05
Location: Oxford,MA
Posts: 900
Likes: 0
Received 0 Likes
on
0 Posts
i cant see the dyno graph could you repst iot i would really like to see it
never mind i can see it now by the looks of the graph i woul deff try somewhere else it shouldnt be dropping off that early
never mind i can see it now by the looks of the graph i woul deff try somewhere else it shouldnt be dropping off that early
05-27-2006, 11:14 PM
#39
Senior Member
Join Date: 07-29-05
Location: AZ
Posts: 7,926
Likes: 0
Received 0 Likes
on
0 Posts
well they had to have run the car in the wrong gear, I've never heard of a car hitting the limiter on a dyno.
that dyno shows like half your powerband
so I don't see anyway it could be legit. I still don't think that dyno shows accurate numbers. Your torque may be close to that number but of course your hp #'s are way off.
I still suggest going somewhere else where they can wind it out all the way to 6500rpm.
that dyno shows like half your powerband
so I don't see anyway it could be legit. I still don't think that dyno shows accurate numbers. Your torque may be close to that number but of course your hp #'s are way off.I still suggest going somewhere else where they can wind it out all the way to 6500rpm.
05-27-2006, 11:30 PM
#42
Senior Member
Join Date: 10-08-05
Location: Oxford,MA
Posts: 900
Likes: 0
Received 0 Likes
on
0 Posts
"i can see clearly now the rain is gone" lolol
but by the looks of that to me is you need to some how beable to keep it in one gear im assuming they were trying for 3rd but it shifted and that why they both drop off try 2nd its not 1 to 1 but like some one had said if you dyo in 2nd all thetime you be able to see about what you gained and then when hptuners hopefully comes out with a program for the 2.2 you can get a real one done
edit i just looked at chevys site 3rd gear woulld be the best since 3rd is a 1 to 1 ratio but untill theres a something to tune you shifts your kinda stuck with what you got look at is this way you have great trq numbers really low who knows those may keep rising also
but by the looks of that to me is you need to some how beable to keep it in one gear im assuming they were trying for 3rd but it shifted and that why they both drop off try 2nd its not 1 to 1 but like some one had said if you dyo in 2nd all thetime you be able to see about what you gained and then when hptuners hopefully comes out with a program for the 2.2 you can get a real one done
edit i just looked at chevys site 3rd gear woulld be the best since 3rd is a 1 to 1 ratio but untill theres a something to tune you shifts your kinda stuck with what you got look at is this way you have great trq numbers really low who knows those may keep rising also
05-27-2006, 11:36 PM
#44
Get low
Thread Starter
Join Date: 03-29-06
Location: Crystal lake, IL
Posts: 3,476
Likes: 0
Received 0 Likes
on
0 Posts
o btw they did try to redline 3rd b4 it woudl shift and it went to 4th.... that sheet is in forth gear when i hit the cutoff at 105mph
heres the vids 1 more time.... there back a page cuz of the graph https://www.cobaltss.net/forums/pictures-videos-64/dyno-2-2-but-stupid-fuel-cutoff-fukd-up-21365/
heres the vids 1 more time.... there back a page cuz of the graph https://www.cobaltss.net/forums/pictures-videos-64/dyno-2-2-but-stupid-fuel-cutoff-fukd-up-21365/
05-28-2006, 12:06 AM
#45
Senior Member
Join Date: 04-17-04
Location: Calgary Alberta Canada
Posts: 2,994
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by biohazard
click to make biggerHow does the car drive?
05-28-2006, 12:11 AM
#46
Get low
Thread Starter
Join Date: 03-29-06
Location: Crystal lake, IL
Posts: 3,476
Likes: 0
Received 0 Likes
on
0 Posts
god damn this is frustrating me why dont half the ppl get this.... it falls because of a fuel cutoff...... the base model cobalt has a fuel cutoff at 105mph..... that pull was a 4th gear pull and i hit 105 Mph around 3K RPM thats y it drops... the car drives fine
05-28-2006, 12:17 AM
#47
Senior Member
Of course you hit your limiter, you were in 4th gear before they decided to get on it.
4th gear is like overdrive...you need to find a way to dyno in 3rd gear. If you can't, don't bother dynoing your car cause it won't be accurate.
Why is everyone talking about tire types? He's on a freakin dyno! He could have steelies on w/stock tires, it doesn't matter.
4th gear is like overdrive...you need to find a way to dyno in 3rd gear. If you can't, don't bother dynoing your car cause it won't be accurate.
Why is everyone talking about tire types? He's on a freakin dyno! He could have steelies on w/stock tires, it doesn't matter.
05-28-2006, 12:25 AM
#48
Get low
Thread Starter
Join Date: 03-29-06
Location: Crystal lake, IL
Posts: 3,476
Likes: 0
Received 0 Likes
on
0 Posts
like i said its an auto, thats how you dyno an auto. i cant lock it into 3rd, only 1 and 2... and btw 4th gear will be pretty damn accurate.... 3rd is 1:1 and 4th is damn close
05-28-2006, 12:32 AM
#49
Junior Member
Join Date: 03-19-06
Location: MD
Posts: 433
Likes: 0
Received 0 Likes
on
0 Posts
you have only 2 inch piping? my sunfire came with that STOCK, you should have at least that stock, i say bump up to 2.25" and you should gain some hp back, stock you should be around 120ish hp and thats with no mods on the 2.2 eco's.