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More boost than I thought possible

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Old Nov 2, 2000 | 12:05 AM
  #1  
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From: Vandenberg AFB, CA U.S.A.
Talking More boost than I thought possible

I was out in my silver 00'L the other day giving one of my friends a wild ride. As I hammered it I saw the gauge go to 10 lbs of boost. I stopped and told my friend to watch the gauge cause I didn't believe it. Once again the boost went immediately to ten. I tried different acceleration pressure on the pedal and the gauge seemed to be working fine. All I have is a drop-in K&N filter for mods so far. Has anyone else had this happen, or is my boost gauge on the fritz?
 
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Old Nov 2, 2000 | 04:08 AM
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SVT is known to mislead it's competitors by putting 8 psi , instead of 10-12 psi on the blower, and a 14.6 quater mile rather than a 13.6 - 14.0x 1/4 mile. So I doubt that there is anything wrong with your Truck. Sounds like she's running great.
 
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Old Nov 2, 2000 | 04:18 AM
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Cool

That's normal but you need to put on a freer flowing muffler to get the full benefit of it. If you want another 1/2 lb. to 1 lb. more boost cut about a 4" by 4" hole in the bottom of the box. When you look at it you still can't tell it's not stock.

You are making the extra boost because of the filter.

------------------
Later,

Chuck
Black 00
http://home.midsouth.rr.com/lightningpage



[This message has been edited by LTNBOLT (edited 11-02-2000).]
 
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Old Nov 2, 2000 | 05:50 AM
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72smitty - do you have a picture of your brushed trenz grills on your silver lightning???

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Old Nov 2, 2000 | 08:24 AM
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Any Ideas why I'm only showing 6lbs. max on my 00 "L"...Thanks
 
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Old Nov 2, 2000 | 08:41 AM
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My truck showed 10 lbs before it blew the muffler off, regularly. 6-8 lbs. in first, then 10 in 2nd. I dont look at the guage anymore, and it will be March before I can tell what it says now...No muffler. No chiop. Thank goodness I don;t start class until 11:30 alaska time. I am DONE.

------------------
99 Black Lightning
factory tonneau cover, 100k mile warrantee, bed/under liner,
F150online.com R hp sticker mod in the mail.
1/4
2.145 60' 8.789@82.71 (1/8) 13.603@101.05 1/4 same run
straight pipes, 'Major' rear lights, no chip
Lightning!


 
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Old Nov 2, 2000 | 09:50 AM
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Nothing abnormal. When I installed my 80mm Pro-M (includes K&N cone-type filter) my boost jumped from 8 to 11 psi. After installing the R9 Superchip, which increased the shift point, I'm hammering 12 psi (I guess, all I know is my needle is way off the register into the black part of the dash!) The comment about needing a better muffler is questionable, and has been debated here before. The stock exhaust is quite effective. The majority of posts I've read have reported a huge increase in noise, and practically zero increase in performance. My two simple mods have netted 13.30-13.40 @ 102-103 mph performance on stock tires. I don't think the stock exhaust is plugging-up things whatsoever (to any serious extent, at least).
 
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Old Nov 2, 2000 | 09:55 AM
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From: Rutledge Md. (west of Fallston Md.)
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Hey 69bossnine
Where'd you get the 80mm Pro-m..sounds like something I defineatly need...
Thanks

------------------
Ted O, Black 00 "L"
Superchip, K&N
 
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Old Nov 2, 2000 | 11:53 AM
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A friend and I both bought 2000 Silver Lightning’s 2 days apart from each other. Both trucks are completely stock. His gauge only shows him getting 8lbs. Mine has always risen up to 10 when getting on it. It climbs up to 8 quickly and then goes to 10 a second later. I have not done anything to my truck. The only difference between the two trucks is I waited until 800 or so miles before I started getting all over it.



------------------
93 Teal Cobra #4656
2000 Silver Lightning #4524


 
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Old Nov 2, 2000 | 02:38 PM
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On a dyno a K&N is usually worth, what, 2-3 horsepower? Insignificant, the K&N is not some radical mod that would immediately tap-out your stock muffler, imho. Variations of 1 to 1.5 tenths between runs is common and normal, depends on how long the line was in the staging lanes, water temp at the time of launch, oil temp, which way the breeze has shifted. Even the transmissions in these trucks shift at different points depending on fluid temp. I'm not trying to be patronizing, I'm sure you already know this junk. But just from a practical standpoint: My 2000 has an R9 Superchip and the 80mm Pro-M and that's it. Factory thermostat, plugs and muffler. I've run it once, 2 weeks ago, and it ran 13.30-13.40 at 102+ all night long in a crosswind. My tires were at 32psi (I forgot my guage, so I couldn't diddle with tire pressure. I rarely ask to borrow crap at the track), so I was feathering it like crazy off the line and getting lousy 2.04 60' times. I think it's fair & safe to say that with proper traction I'm running 13.20-13.30. So, I've got a 2 mph edge over your published best with stock exhaust. How could that be? Yes, I've got the bigger mass air, but if the muffler is the limiting factor in flowing air through the engine, would it not nullify any gains my Pro-M would account for? Weather was 70 degrees, about 1000 ft above sea level. Now I'm open to the argument that maybe the K&N in a stock airbox slows things down. Maybe the box creates a turbulent condition when you start sucking more air than stock through it. But none of that would have anything to do with or be remedied by what's going on at the exhaust end of things.

[This message has been edited by 69bossnine (edited 11-02-2000).]
 
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Old Nov 2, 2000 | 04:53 PM
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Cool

This isn't rocket science. Read the post again. The stock air filter was in the stock airbox and the K&N was in the stock air box. The airbox is not a factor in this case. The engine is supercharged that makes it pull 2 EXTRA lbs. of boost. That is usually worth 20 to 30 HP. Well, where did it go. The runs were very consistent. All were within .05 of each other. Just accept it as fact with a stock L don't try to understand it.

Besides the stock airbox with a K&N will flow as much as those aftermarket filter kits if you cut a 4 x 4 hole in the bottom of it. I make around 11 lbs. of boost or a little more with this setup.

Last week I ran a consistent .15 faster than a buddy with Sal's filter, R9 chip and stock muffler. Since we are running the same chip that was not a factor. People seem to think the stock airbox is like a lead weight put on from the factory. All you have to do is open it up.

------------------
Later,

Chuck
Black 00
http://home.midsouth.rr.com/lightningpage

 
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Old Nov 2, 2000 | 05:47 PM
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I'm lost on where any of this is going as well. If your assertion is that 2 lbs of boost, afforded by the installation of the K&N into the stock airbox, was somehow "lost" or negated or not usable because of the stock muffler, then my truck's mph performance makes no sense, by itself or compared to your truck. My setup gives close to 12 lbs of boost (the needle sweeps 1/8" off the white gauge onto the black matte) and performs 2 mph better than yours in the 1/4 without the aid of a Magnaflow. Your original point was that the addition of a K&N, allowing more boost to be made, SLOWED your truck down, and that it was the stock muffler causing this phenomenon. You continued on to say that the Magnaflow reversed this problem. I say, if that was the case, my truck would as well be making its additional boost in vain, only to get plugged up at the muffler, and slow down, just as your truck did. But instead, in reality, it runs as strong as anyone would expect given it's short list of (2)mods. I suspect whatever you had going on swapping filters, never had the slightest thing to do with your muffler. And now that you've cut a hole in the bottom of your air box, you claim that your K&N is now performing better than the stock filter and as well as most aftermarket airbox replacements. Fine. Would it not be the 4" hole that was the solution to the filter/muffler debate all along? Sorry for stringing this discussion out painfully. I'm ready to let it rest, knowing I stood up for my trusty stock muffler to the point that I'm ready to punch myself.
 
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Old Nov 3, 2000 | 12:14 AM
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When you're stock and you put a K&N filter panel in the airbox your boost goes up but your times go down. I proved it at the track in three consecutive runs. I have a coworker who will back me up on this. He was there. We were both just shaking our heads.

I put the Magnaflow muffler on and went back to the track. I made passes with both the stock filter and K&N. This time the reverse was true. It was faster with the K&N and slower with the stock filter.

Stock it was .15 slower and with the muffler (factoring it out) it .15 faster on average.

You guys are throwing a chip, filter and MAF at these things all at the same time. You know it's faster but you don't know what did what. Maybe the chip makes the filter work better, I don't know. What I do know is when stock a filter will slow you down without opening the exhaust.

I've got a 100 bucks that says if you take stock L and dyno it with and without the K&N it will make more HP without. I told a friend about running slower and he told me they got the same results on the dyno at Hypertech where he worked. A couple of other people on this board have experienced the same results which they listed in their post.

------------------
Later,

Chuck
Black 00
http://home.midsouth.rr.com/lightningpage



[This message has been edited by LTNBOLT (edited 11-02-2000).]
 
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Old Nov 3, 2000 | 12:41 AM
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Cool

My L was reading 10psi completely stock and now that I have the JL filter kit the gauge is reading past the 10psi mark....hope a gauge pod comes out soon so I can put an "accurate" boost gauge on!

------------------
Red 2000 SVT Lightning


 
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Old Nov 3, 2000 | 05:22 AM
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Cool

I'm simply saying to chip it or put a muffler on it or both to make it work. The muffler is cheaper. The chip changes timing, fuel ratio and shift points. It apparently corrects whatever is going on with the increased air flow. The plug change was to get the platinum plugs out but it gave me more throttle response (bonus I didn't count on). The stat was just to curb detonation. I was able to run 91 octane with no ping after installing the R9 single program chip ( I was on my way to fill up with 93 so I gave it a good thrashing to see what would happen). I only have $500 worth of mods including the plugs and stat. I ran a best 13.39 @ 101.2 last night with limited traction. My other point was you don't have to throw a lot of money at these things to make them go fast.

Nice discussion but don't punch yourself that's your wife's job (if your married) for spending money on the L to get that extra .10 of a second you know is there.

P.S. Fordsales will have more on the muffler situation next week. His wife must be ready to beat him silly or maybe she already did. LOL.


------------------
Later,

Chuck
Black 00
http://home.midsouth.rr.com/lightningpage



[This message has been edited by LTNBOLT (edited 11-03-2000).]
 
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