Did two passes each way on the same stretch of road. About 1/2 mile long...very flat (Indiana of course). Ran the open filter first, box second. About an hour between the sets of runs.

 

The MPH is nearly accurate on the G-Tech. 1/4 tracks are accurate on the e.t. but on mph they aren't. Why? Because they take measurements during the last so many feet (usually around 60 to the end) and then compute that into calculated mph. That's why a lot of folks report different on their odo to what the timeslip states (I'm not necessarily meaning just our Lightnings). Also, you can prove this to yourself by running the track wide open and then in the last 30 feet nearly stop and "inch" through. You'll see your mph on the slip way different than what you went through the trap at. Basically it's the same as nailing the brakes to win a bracket race. Sure, this is horrible on brakes and could be dangerous so do it at your own discretion, LoL.

Also, rags (C&D, MT, R&T, etc.) test how the g-tech does, but they most always use a fifth wheel to determine actual mph. So if you look in a magazine and see that the mph is higher on some vehicles than what some are getting at the track you will now know. Also, remember, rags test their vehicles with specific things like certain amounts of fuel, fluids, etc. and the majority of them cannot drive.

All in all the G-tech is nearly accurate in real life on the mph, and about .1 off on the e.t.

BfB

 

If you could, and I appreciate your testing of this, do them back to back but do the open air filter first when it's basically cold, then run the stock right after when it's warm...wait an hour and do it again but opposite (stock first then open). This will give us an idea at which performs better cool.

BfB

 

BfB,

I guess I should have been more exact in my above comment. I should have wrote:

I do appreciate the G-tech's calculated MPH is not the same as the dragstrip’s calculated MPH, however whichever method used would have been consistent.

In fact several months ago, I (like you have here) described in detail how the G-tech works. If you like, check out my comments on pages 2 and 3 of this thread: 2001 Lightning Superchip.

Joel….

 

Not that I am disputing the above facts, But my 01 run a hell of alot stronger with the open air filter (JL ramair) than it did with the stock airbox! So what could it be?? The motor beginning to "loosen up" or better yet maybe it's my head telling me it's faster because it's sounds faster ? Whatever the reason Iam NOT going back to the stock airbox Iam done now.

 

You stated JL ramair! That's what it sounds like may have made your biggest difference was the fact that it was more of a ram air system. I'm not sure if the system is not a ram air or not, though. Is it?

BfB

 

nice test red 2k
HIGH ROLLER made beliver out of me

 

Hey Flintstone,
It was nice meeting you last week!

I have done alot of testing with the open filter against my modified stock airbox with K/N filter and my modified box is a consistant 1 to 11/2 tenths faster everytime when truck is cool or hot lapping!If everyone took a 01 airbox with K/N installed and tested it at the track against the open filter on the same day within the hour everyone would see for themselves it will be faster than the open filter.I think most people believe they are going faster because it looks alot meaner and definitely sounds alot meaner with the open filter than the stock one but one cannot really know unless you do it the same day and same temps and comparable 60ft. times also!Just my opinion!!!

Matt

Silver 01
12.85
109.40

 

Highroller:

What did you do to your stock airbox that was "modified.?" Was it just changing to K&N? Sounds like what you did made a tremendous difference in performance by your time; was it only swapping to a K/N filter? I read in a post a few months ago that K/N filters did nothing for performance!

 

meiwah 98,
I cut a 4 inch hole in the bottom of my airbox like some other fellow L owners have done and ran a 4 inch flex hose from there.By installing the K/N filter on my truck did help over the paper filter that comes standard on our L's.On my truck there is a noticeable difference between the two and everyone has there own opinion on this.Anyone that personally knows me will tell you i spent alot of time and money on different mods with testing with my 99 i used to have and that is why i am running 12.80's with just a few mods with average 60ft. times because i know what really works on these trucks and what doesn't!!

Matt

Silver 01
12.85
109.40

 

99.9% of the time they work, and 50% of the time they work well!

I'm just spoutin' #'s to let you see that they do work...basically what I'm saying is that on some cars they will gain only 1 hp. On others they will gain 10 to 15. Even so, they are better than the stock filter, esp. later on when you make more improvements in the intake track or exhaust.

BfB

 

High roller: thanks for the information. Now for another question, I just ordered a single blade t/b from Mark at Lightningforce, and I read in earlier posts that I have to change my stock airkit for something more breathable. Mine is an '01 already with the new 90mm opening. Does this mean I HAVE to change the '01 air setup to appreciate the t/b? Or will installing the t/b only be a waste of time (and money)? Thanks for anyones insight.

 

Personally, it's a waste if you haven't done anything else like a chip, first. I am not sure of the exact #'s but they aren't anything special with just a tb (maybe a max of 3-5 rwhp?).

BfB

 

Speaking of factory air-boxes, If anybody has a factory box from an 01 laying around, I'll buy it. I screwed mine up when I was drilling a 3 inch hole in it( should have clamped it down and slipped with the pilot drill on the hole cutter).Thanks!!!

 

Mondo1,

Mine is up at JDM - Jim had to put it on his truck to get home after he installed his filter kit on my truck. When I get it back I will gladly sell it to you as my results are MUCH BETTER with the open filter (2.5 mph & 1.2 tenths). I will get Jim to bring it to me at the Superchip event on the 28th. Just let me know if you want it.

Thanks