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Ajones51Wed Mar-05-08 11:12 AM
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"Dyno results for gen 2 with cobra intake"


          

Last Wednesday I took my 97 lsc to alternative auto for some dyno tuning. I finally got the ported cobra intake on last month with a lot of help from Jeremi. He is definitely the man for helping out! I gasket matched the intake and ported/polished the runners. I did not shorten the runners as this is my daily driver and I didn't want to sacrifice any torque for some extra horsepower at 6k rpms. I will try to post some pics of the engine bay when I get a chance to take them.

Before the graph I will list the mods. The car has 95k miles on the original motor/tranny. I have the ported cobra intake w/egr delete, 9" UPR conical filter, just cleaned IMRC's, 2.5" mandrel bent exhaust with x-pipe and straight through mufflers, 24k tranny cooler, 4.10 gears with auburn t-lock, MMX d-shaft, standard height coil conversion (just installed thursday), Mach 1 front brakes, and 18x9 wheels with 255/45/18 tires.




The weather wasn't the best for the dyno run, it was low 70's but the humidity was pretty high. I'm also wondering if the big wheels/tires didn't lower the numbers too. I am very happy with the results, the car runs great now with the tune. Big thanks to Lidio at alternative auto. He really worked wonders with the transmission. No TC lockup until 4th gear at 60 mph. It is so much more fun to drive. Hopefully this information will be good for some of you guys pondering the cobra intake swap. I think it was definitely worth it, and it really pulls hard after 4k rpms now.

  

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Subject Author Message Date ID
RE: Dyno results for gen 2 with cobra intake
Jun 04th 2007
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RE: Dyno results for gen 2 with cobra intake
Jun 04th 2007
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      RE: Dyno results for gen 2 with cobra intake
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           RE: Dyno results for gen 2 with cobra intake
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                RE: Dyno results for gen 2 with cobra intake
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                     RE: Dyno results for gen 2 with cobra intake
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                          RE: Dyno results for gen 2 with cobra intake
Jun 05th 2007
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                               RE: Dyno results for gen 2 with cobra intake
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                                    RE: Dyno results for gen 2 with cobra intake
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                                         RE: Dyno results for gen 2 with cobra intake
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                                              RE: Dyno results for gen 2 with cobra intake
Jun 06th 2007
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                                                   RE: Dyno results for gen 2 with cobra intake
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                                                        RE: Dyno results for gen 2 with cobra intake
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                                                             RE: Dyno results for gen 2 with cobra intake
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RE: Dyno results for gen 2 with cobra intake
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right on the MARKMon Jun-04-07 11:42 AM
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#1. "RE: Dyno results for gen 2 with cobra intake"
In response to Reply # 0


          

Do you have dyno #'s from before with just the intake change?

  

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Ajones51Mon Jun-04-07 12:47 PM
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#2. "RE: Dyno results for gen 2 with cobra intake"
In response to Reply # 1


          

No, I didn't dyno before the intake swap. From what I've read, most stock gen 2's do around 220 rwhp. Between the exhaust and the intake I made around 25 more. I don't really think the exhaust did much. I couldn't feel a big difference. I still have the first 2 cats. They are soo tiny! If there is a restriction, its the cats, and then maybe the stock mufflers.

The intake did make a big difference seat of the pants. Definitely more than the exhaust.

  

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billcuMon Jun-04-07 04:03 PM
Member since May 20th 2003
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#3. "RE: Dyno results for gen 2 with cobra intake"
In response to Reply # 2


          

Glad to hear that it worked out good.

I was happy to be part of the intake install. Even though it was just bringing the wrench for removing that fun EGR tube.

Are you going to make it to the big Michigan Meet at Jeremi's?

Bill, Charter Member of Club 16
1998 White Collector's Edition 109K
1994 Red Garnet Glaze 200k miles
1994 Deep Jewel Green 183k miles

  

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coldasiceMon Jun-04-07 07:54 PM
Member since Oct 28th 2002
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#4. "RE: Dyno results for gen 2 with cobra intake"
In response to Reply # 3


  

          

Nice dyno, now get that to the track cause dyno numbers don't mean much to me...

98 Base Medium Charcoal Green/Light Prairie Tan
98 Black/Graphite LSC (13.22 @ 106.2mph)SOLD
93 Midnight Opal/Graphite (14.7 at 94mph)RIP
96 Black/Black Base (14.93 @ 95.79mph)SOLD
95 Black/Pearl LSC (13.8 @ 101.3mph) RIP

  

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JeremiMon Jun-04-07 08:17 PM
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#5. "RE: Dyno results for gen 2 with cobra intake"
In response to Reply # 4
Mon Jun-04-07 08:20 PM by Jeremi

          

... and track numbers mean sooo much when you compare cross country tracks ...
Dyno numbers are sure good enough for placing sure bets on the weekends

I'm sorry I didn't catch up with you guys. I made it to the rollers around 2PM, and run into some issues while tunning.
Lidio told me your trans shifted great, especially for having that many miles.
The numbers look great IMO, exactly where I told you they would be. So what's next ?

-------------------
1997 M8 LSC Deep Navy Blue/ Midnight Black

  

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coldasiceMon Jun-04-07 09:39 PM
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#6. "RE: Dyno results for gen 2 with cobra intake"
In response to Reply # 5


  

          

Sure track times vary but when you know the DA you know what's going on.

98 Base Medium Charcoal Green/Light Prairie Tan
98 Black/Graphite LSC (13.22 @ 106.2mph)SOLD
93 Midnight Opal/Graphite (14.7 at 94mph)RIP
96 Black/Black Base (14.93 @ 95.79mph)SOLD
95 Black/Pearl LSC (13.8 @ 101.3mph) RIP

  

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Ajones51Tue Jun-05-07 02:03 PM
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#7. "RE: Dyno results for gen 2 with cobra intake"
In response to Reply # 6


          

For now, I guess I am done messing with the car. Any more mods seem to be very expensive. I'm very happy with the cars performance.

I will be taking it to milan to see what it'll do in the 1/4 sometime this summer. I think I'll pull all the seats out, spare, jack, etc.

I don't want to race it too many times since it's my only car, but I'd like to see what times I can run. Hopefully it will be in the low 14's. We'll see how much weight I can strip out of it for the race. I will post the results for sure. (Unless it runs 15's!)

Thanks again to Jeremi, Bill, and this board for all the great information and help. I couldn't have done it without you.

  

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JeremiTue Jun-05-07 06:31 PM
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#8. "RE: Dyno results for gen 2 with cobra intake"
In response to Reply # 7


          

DA doesn't tell the whole story, you know it.

Let me know when you're coming out to Milan. I might be in shape to run by then.

-------------------
1997 M8 LSC Deep Navy Blue/ Midnight Black

  

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coldasiceTue Jun-05-07 10:09 PM
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#9. "RE: Dyno results for gen 2 with cobra intake"
In response to Reply # 8
Tue Jun-05-07 10:09 PM by coldasice

  

          

If you have your timeslip and DA for that run I will take that over any dyno run to gauge the car's performance any time. Heck, if I can just get your MPH for the 1/4 mile I will take that over any dyno run.

98 Base Medium Charcoal Green/Light Prairie Tan
98 Black/Graphite LSC (13.22 @ 106.2mph)SOLD
93 Midnight Opal/Graphite (14.7 at 94mph)RIP
96 Black/Black Base (14.93 @ 95.79mph)SOLD
95 Black/Pearl LSC (13.8 @ 101.3mph) RIP

  

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JeremiTue Jun-05-07 11:47 PM
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#10. "RE: Dyno results for gen 2 with cobra intake"
In response to Reply # 9


          

Yeah, mph is really a VERY accurate way to describe the car's performance NOT

Track prep and other stuff comes into play but you seem to be missing this concept as I've noticed in the past from your various replies.

-------------------
1997 M8 LSC Deep Navy Blue/ Midnight Black

  

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coldasiceWed Jun-06-07 02:14 PM
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#12. "RE: Dyno results for gen 2 with cobra intake"
In response to Reply # 10


  

          

MPH equals horsepower, period. Track prep has almost nothing to do with MPH, but the DA does play a big part. If you tell me what the DA was on your run, your MPH, and your race weight, I will tell you how much horsepower your car has and I will trust that number more than a dyno. Sorry for the thread jack, btw.

98 Base Medium Charcoal Green/Light Prairie Tan
98 Black/Graphite LSC (13.22 @ 106.2mph)SOLD
93 Midnight Opal/Graphite (14.7 at 94mph)RIP
96 Black/Black Base (14.93 @ 95.79mph)SOLD
95 Black/Pearl LSC (13.8 @ 101.3mph) RIP

  

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BlackIceLSCWed Jun-06-07 02:34 PM
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#13. "RE: Dyno results for gen 2 with cobra intake"
In response to Reply # 12
Wed Jun-06-07 02:42 PM by BlackIceLSC

  

          

I wont get in on the debate of Dyno vs ET as far as "what's the most accurate method", but I will say a thing or two

1)it doesnt matter what a piece of paper or graph from a dyno-pull tells you if you arent happy with the car's on track performance
2)it doesnt matter what the time slip tells you, as 1320 feet is not a measure of horsepower or torque, it is a measure of time and speed.
3)measuring a car's HP and torque figures based solely on a 1/4 mile time slip will NEVER provide exact figures. they will give you a broad range.

I have REAL WORLD proof. Not magazine articles. There is one VERY crucial element involved in using a time slip as a measure of HP that SOME PEOPLE always seem to forget

wasted power through chassis. You see, on a dyno, traction, chassis flex, wind resistance, suspension, drivetrain slippage, and rolling resistance are NOT factors in readings. all of the above will effect 1/4 mile ET.

Serge...a 45 mph headwind will never cause a loss of horsepower, But it can cause a 3-5 mph drop in 1/4 mile MPH just like a 30 mph tail wind wont help your engine gain any horsepower..

Bottom line is this-you're both right, and you're both wrong.
the dyno wont always tell you how fast your car is, just how much power your car's engine makes. Just like the track will never tell you how much HP your engine makes, just how fast your car is.

Serge...hypothetically speaking, lets say a top fuel dragster makes a 1/4 mile pass running 318 mph. The dragster weighs 2150 lbs. DA is 2100 feet above SL. How much HP does the engine produce?

if you use your calculator, it'll tell you the dragster has just over 5000 hp. we all know this is not the case, but based on your typical ET/HP/MPH calculator, that's what it'll come up with.






94 sprung/97 on air
President/Founder Club 16

  

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coldasiceWed Jun-06-07 02:49 PM
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#14. "RE: Dyno results for gen 2 with cobra intake"
In response to Reply # 13


  

          

My calculator says 4700 rear wheel horsepower. Of course you can't get a accurate reading with just one run. I would say if you take your average MPH with 20 runs on 4 different days (5 runs each time), you can get a very accurate reading. Also, the more horsepower you make the harder it is to calculate accurately. Here is the most accurate calculator on the internet:
http://www.modulardepot.com/hpc.php

98 Base Medium Charcoal Green/Light Prairie Tan
98 Black/Graphite LSC (13.22 @ 106.2mph)SOLD
93 Midnight Opal/Graphite (14.7 at 94mph)RIP
96 Black/Black Base (14.93 @ 95.79mph)SOLD
95 Black/Pearl LSC (13.8 @ 101.3mph) RIP

  

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BlackIceLSCWed Jun-06-07 04:40 PM
Member since Jul 25th 2003
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#15. "RE: Dyno results for gen 2 with cobra intake"
In response to Reply # 14
Wed Jun-06-07 04:41 PM by BlackIceLSC

  

          

well, the TRUE answer is actually:

a top fuel dragster makes well over 8000 hp. at the flywheel and near 7000 hp at the rear wheels. However, due to pre-arranged clutch slippage, tire slippage, track conditions, driver ability, and fuel mixtures, etc, the MPH vs vehicle weight and DA calculations are completely wrong.

I rest my case.



94 sprung/97 on air
President/Founder Club 16

  

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coldasiceThu Jun-07-07 01:00 AM
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#16. "RE: Dyno results for gen 2 with cobra intake"
In response to Reply # 15
Thu Jun-07-07 01:01 AM by coldasice

  

          

The calculator works great for regular street cars up to 1000 horsepower. Check it out, I plugged in numbers for my 96 Mark VIII. 3950 race weight, 95mph trap speed, I put in 18% drivetrain loss... I get 230rwhp and ironically exactly 280 horsepower at the crank!

98 Base Medium Charcoal Green/Light Prairie Tan
98 Black/Graphite LSC (13.22 @ 106.2mph)SOLD
93 Midnight Opal/Graphite (14.7 at 94mph)RIP
96 Black/Black Base (14.93 @ 95.79mph)SOLD
95 Black/Pearl LSC (13.8 @ 101.3mph) RIP

  

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Thomas AWed Jun-06-07 12:02 AM
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#11. "RE: Dyno results for gen 2 with cobra intake"
In response to Reply # 0


  

          

Those are some good looking numbers. My car with pretty much the exact same mods made 241rwhp on an untouched Cobra intake.

Thomas



1997 Lincoln Mark VIII LSC
392rwhp 338rwtq 12.97 @ 112
Overland Park, Kansas

  

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