Why is my mph so slow?
06-11-2007, 03:50 PM
#22
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Don't worry about breaking the 10 bolt, thats how you break it haha. Just don't worry about it and it won't break haha. Former owner of my car was pulling 1.4 60's on the stock 10 bolt no problem. 4k stall 26" MT ET streets
06-11-2007, 09:27 PM
#23
Well from the looks of the tune my timing is wayy low and it probably due to the fact that the car hadn't been tweaked enough after I started running a thinner head gasket this winter and had my FAST 90 port matched. I'm going back to my tuner on Wednesday to get it all sorted out and then I'll have to plan another track date to give that rear hell in pursuit of some 11s 
06-12-2007, 07:05 AM
#24
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Originally Posted by Detroitmuscle
Well from the looks of the tune my timing is wayy low and it probably due to the fact that the car hadn't been tweaked enough after I started running a thinner head gasket this winter and had my FAST 90 port matched. I'm going back to my tuner on Wednesday to get it all sorted out and then I'll have to plan another track date to give that rear hell in pursuit of some 11s
You are going to take it back to the tuner with a dead o2 sensor?
06-15-2007, 07:05 PM
#25
Originally Posted by Smokinstorm
And you're making big horsepower and therefore making big MPH. That's why you got your mid/high 11 second timeslip. Put down only enough power to run 113 out the end with the same 60' and see what your time slip looks like. Look at his 60' and 660' also. He's just not getting moving fast enough early enough in the run to post mid 11's unless he puts down some serious horsepower and therefore some major MPH on the boards. Sorry, it's just a matter of physics. He's not making enough power to run the times he's looking for without some major work in the first 60',330' and 660'. But like I also mentioned, the DA may have sucked big time thereby costing him MPH.
And, he's a H/C car that should be right around the 450 rwhp mark with his mods (maybe dyno a little less due to the converter) I was looking at his mods and what kind of trap speeds he should be running based off the mods.
At this point, it looks like his key is to have the car retuned to see what's up.
06-15-2007, 08:04 PM
#27
Originally Posted by DOUBT IT
Get that damn 60' down and don't worry about your mph.
My car went 1.620 on those same tires, and ran an 11.969 @ 111.70. Was my mph too low?
Oh, BTW, the car only has bolt-ons, gears, and a stall.
My car went 1.620 on those same tires, and ran an 11.969 @ 111.70. Was my mph too low?
Oh, BTW, the car only has bolt-ons, gears, and a stall.
I went 12.1 @ 109, 1.60 60' --not much power, but a decent ET
06-15-2007, 08:50 PM
#28
Originally Posted by 01_ram-air
Nope, not for the power level you are at. MPH shows power, ET shows a well set up car and takes in to account the 60' times.
06-15-2007, 10:42 PM
#29
Originally Posted by LS1x2
You are going to take it back to the tuner with a dead o2 sensor?
06-15-2007, 10:46 PM
#30
good to hear Jeff, that car really has a lot left in it, hopefully you can get the tune nailed! I think my car is hitting the dyno on Monday but i'm not sure. Keep me posted as to when you hit the track again, we need to go somewhere other than Lapeer, place is an ice box....
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06-15-2007, 11:39 PM
#31
u need gears when i had the ms3 cam only it trapped 113 with 323's when i put 410's in it it trapped 117-118. the reason is the ms3 makes its power up top and not in the low rpms so when u spend more time in the 3500-5000 range then the 5000-6800 range you wont mile per hour but when it gets through that dead zone and to the power zone more quick it will mph right now ur going through the finish at 5800-600 with the 410' you will be at 6600 and it will be pullin hard right then trust me i had the same exact problem put some gears in it then come back!
hope that helps
hope that helps
06-16-2007, 08:12 AM
#32
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Originally Posted by Detroitmuscle
The O2s show to be fine but thanks for the suggestion. The car is going to be retuned tomorrow morning so we will see the difference in dyno numbers and SOTP feel. As for converter inefficiency I just bought a brand new Yank and had my trans built so its very doubtful. I'll keep you guys update tomorrow thanks for all the help.
06-17-2007, 02:16 AM
#34
Got the car back today from the retune and it seemed to be running much better. My tuner said I was running rich up top so he leaned the car out a bit which also took care of my knock. The car picked up 15rwhp which is actually not bad for his stubborn mustang dyno. Now its time to head back to the track and see if I can't squeak into the 11s with some hard launches, I can only imagine how much more of a monster this car would be with some 3.73s in a 12 bolt.
06-17-2007, 08:42 PM
#36
Let me know when/where your going and hopeuflly ill tag along and see if i can keep up, i know i'll be spinning, haha!
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