Shush, you know who will soon be out to pooh-pooh all over this thread.

Coyote

 

A simple and easy test is to unbolt the cover plate at the wye to allow all the air in the world to your motor and do one run. I tried this once and was convinced that the intake was a serious restriction. Now have a needswings inlet. BEWARE the sound is narcotic and solid, but the throttle is crisp as hell. Now put the cover back on to reconnect the air filteration system.

To insure that the engine has a cooler time of it I have taken off the hood blanket and the rubber gasket that goes between the radiator shell and hood. This allows more heat to be radiated and more air into the engine compartment, giving a cooler environment and more rapid cool down when parked "off".

Woody

PS the LET phenolic inlet gaskets are of benefit also.

 

I installed the complete SL system this weekend, and after 2 days of driving I feel comfortable saying the car defiantly lays the power down with less effort. Not sure how much HP was gained, but the car defiantly "woke up" and the engine sounds meaner.

The car is fast as hell now... but then again, it was before!

 

I have an appointment with the dyno to compare stock/ SL55, numbers will be posted. Here is what I was able to accomplish with the stock/ SL55 setups on a 1/8 track.

Stock -8.69

LET SL55 Intake -8.56

Those numbers came from my first runs on the second day of each visit.

 

Almost 1.5/10ths faster in the 1/8th mile? Cool. Wonder what that would
translate to on a 1/4 mile track. I'm sure that the biggest gain is in the
higher rpm ranges, and now with the ability to suck gobs more air in, I can
only image. Too bad there ain't a track any where within 2 hours of my
location, as I'd really enjoy contributing more numbers. Good luck!

Coyote

 

I am checking this restriction out in another way - will try to dyno. by Wed. If not then it will have to be next week as I'll be out of town Thus.

 

Replace the "Y" with a "T"? Interesting, patiently awaiting further detail and results .

 

Dyno set for tomorrow at 3:00.

I do have a newbie question though, where are fuses 17 & 18 located?

I did a quick search but unable to locate that information.

 

Try disconnecting the Yaw sensor instead... I'm guessing it will COMPLETELY disable the ESP as Woody across the pond has shown he can do donuts in the dirt with that one sensor disconnected.

It's not super easy to get to, but not really hard either. Two screws in the center console storage area and a few screws under the shifter trim. Lift the center console up a bit and it's located just behind the shifter (toward the rear of the car from the shifter). You may want someone else to hold the console up while you disconnect it. I'm going to be playing with wiring in a switch or relay on the Yaw sensor to disable it easily.

Good luck!

 

Where is the best place to pick up the SL intake parts? Anyone?

Frustrated

 

Now your talking! I like the sound of that.

 

I got my SL55 intake from LET motorsports. Love the added power and the sound.

MikeR

 

Are you gonna establish a base-line run?? Is the intake your only mod?

Can't wait to see...

 

I got mine straight from the local M-B stealership.

 

When you dyno with the stock intake - be sure you re-install the radiator support openings. - this is one one the major "choke" points of the stock system.

Fuses 17 & 18 can be found in the fuse box under the hood, drivers side by the master brake cylinder.

 

Successful testing was accomplished yesterday on my stock SRT6 and then mod with the SL55 complete intake setup. I am very pleased with the documented gains and I think you SL55 guys will be as well . Six pulls were done; three with the stock setup and three with the SL55 complete setup. Data sheets are not available yet because there was a computer problem preventing printouts. Once those sheets are emailed to me (hopefully today) I will provide ALL the information they contain. However, here are the top dyno hp numbers on both setups.

Stock- 292 or 293

LET SL55- 317 or 318

BB, thanks for pointing out the fuse box location so I could pull fuses 17 & 18. I also reinstalled the radiator supports just for you . Again I will provide data sheet info once it is emailed to me, thanks for the good lucks and willingness to help everyone.

Side note:
My pulley arrived yesterday after I returned home from the dyno runs! I will go through the same steps with the pulley as I did with the intake.

Steps

• Install pulley
• 1st track visit (three runs)
• 2nd track visit (three more runs)
• Post best run number
• Dyno
• Post dyno run

 

Nice pulls - now just wait until you get that pulley installed...

Next up will be a tune - Let me know if you want contact info for SpeedInnovations

 

If the SL55 intake set up is proven to add power why did ShawnQ see a decline in power after he installed the Y-Pipe? Do the bigger boxes of the SL55 make a major difference?

 

I did a quick search to compare the three aftermarket intakes available to us. Here is what I found…..

BDJ
Stock:
310.79whp 300.13
308.49whp 304.42

BDJ's Cold Air Intake
336.17whp 316.51
330.94whp 312.10

+26 hp over stock

Needswings
average before = 297.31 hp 283.69 tq
average after = 323.13 hp 304.58 ft /lbs of tq
average gain = of 25.82 hp and 20.89 tq for a bone stock car.

+25.82 hp over stock

Gang Member
Stock: 292 +/- 1
SL55: 317 +/- 1

+25 hp over stock

You tell me which one is better….

 

[/quote]

You tell me which one is better…. [/quote]

Considering the SL intake is the cheapest, maintains a stock look and keeps the filter(s) safe from water intrusion... I'm gonna say we have a winner.


But, then again, I might be biased...