Hammer Down

What I'm looking for is how much speed did you pick up and how much et did you knock off after going from stock to stage 1? (please list your pulley size)

Stage 1 = Pulley & ECU Tune.......

MBH motorsports

Pending on the pulley size and how aggressive the tune is, will dictate the end result of the power. Here is a Pulley and tune only mod of a SL55. I know this doesnt answer your time question, but it might help with just a piece of the puzzle.

jangy

I went with the first version of the VRP 178 (180) and started with the powerchip flash. At the time, we gained major low end and lost top end. After some time tuning, the stage 1 became the best bang for the buck.

Times and speeds are relative but I went from just over 13 seconds to just over 12.5, so half a second. My 60 did not improve but my trap went from consistent 116mph to 122mph. The car did very well up until the 1/8th mie where it would fall on its face. Later, cooling, and openning the intake and exhaust took care of some of it....

citylightva

Almost as fast as me Finally got the itch huh.??

Hammer Down

itching like poison ivy

motorkas

Don't have a pulley - just a "J" tune - here's the Dyno with that. It has been only run at the track once so no baseline but Clayton pulled the last run of the day on street tires and in 90 degree weather and ran a 12.2. Everybody says with the right DA's and temps it's easily in the high 11's. To put it into perspective - my fastest time of the night was 12.8 so over half a second was just the result of the driver (Clayton is absolutely NASTY with his launches and driving skills - If I ever bet against him - I'm playing golf the next day with him so I can get my money back I believe he cut a 1.7 60 (it was his first time in the car and once again, it was on street tires).

Oh yeah - my trap speeds were 114 with the 12.8 and Clayton's was 112 - almost 113 with the 12.2.

I'm personally staying with the stock pulley but adding Kleeman headers and race cats.

Hope the info helps

izzyz28

This is all on street tires and traction limited.

My best time stock was a 12.11 @ 116 MPH.
My average time stock hot-lapping was ~ 12.25 - 12.30 @ 114-115 MPH

My best time with 180mm and tune was 11.98 @ 116 MPH.
My average time with 180mm and tune hot lapping was 12.05 - 12.10 @ 116 MPH.

Outside temperature was ~70 to 85 degrees depending on the day.

All of the gains are in the first 1/8th mile, and then the car actually runs the same or slower the last 1/8th. On the street it is an awesome combination, but without cold weather it doesn't really perform at the track.

alextaylor29

Very helpful thread. Getting the 180mm, upgraded HE and tune next week. Once on I will get it dyno'd at Dynocomp and post it here.

It will be in AZ during the summer (so 115) so I expect the dyno numbers to be lower but I'll still post them here.

Like most of you I don't got to 100 MPH often, so my upgrades are more for fun on the street during my commute. (0-75MPH lanches, that sort of thing.)

Alex

MB_Forever

I thought you were going for headers first? Did you already get them?

I remember MikesAMG picked up a lot of ET and trap after stage 1 and drag radials. At the time, I think he was the quickest/fastest Stage 1 in the west coast.

skratch77

best time 100% stock was 12.4 at 113

180,H/E,tune 12.65 at 116

stock pulley and tune/HE 12.2@117.30

Iv added kleemann headers with cat delete and will hit the track soon.I should break 119mph on stock boost and then Im adding a 168 or 172 and fianlly be done with the car

Juice1979

Stock - 12.1 at 118mph (street tires)
172 pulley and LET Shelf Tune - 11.55 at 120.9mph (drag radials)

Unfortunately my runs were done on different tires so not a true comparison. But the difference in mph is evidence of the power gain

izzyz28

Those are awesome times and MPH. What were the conditions(mainly temperature) those days, and what did you do to prepare for the passes(cooldown, ice, etc..)?

AWOL

First time at the track with this car, best was 12.0@115.85. This was LET tune only.

Seems like the posted results dont get much faster with more boost. I would have thought you would pick up at least 3-4 mph with any pulley.

izzyz28

I thought so too, but during the Summer it's not going to happen. I've ben fortunate enough to have a couple of 55-60 degree mornings since I got the pulley, and it's like the car picked up 50hp. I can guarantee that when the temperature is in the 40's and 50's we'll see that 3-4 mph easy. I'm planning on going to the track in October to test this, but there is a huge SOTP difference as temperature changes.

Hammer Down

Wow 13 replies out of all of the pulley's in this forum

juicee63

Your car with a pulley likely runs 10's lol

Hammer Down

lol, how ya been? you know little hammer just started college on monday
as far as the 10's go, I will leave that to Alan. I will be happy with 11.1-11.3@128

juicee63

That is GREAT MAN!! I cannot believe that, we should all be so lucky to have a son so bright. Id say if he graduates you give him the car? HAHAHAHAHA

Hammer Down

yeah he's a good kid, i just hope he stays that way. college life has a weird way of changing people. if you're ever in fresno let me and i'll have him meet up with you.

Juice1979

Both runs were done with the temp around the high 40's. I didnt do anythig as far as prep...as a matter of fact both of those runs were done after hot lapping.

E55Bullet

Im about right there with ya, with the same mods..

Hammer Down

what were your times & speed?

E55Bullet

umm i think around 11.7, low trap speeds of around 116, I'm pretty sure I need a retune, I think I'm pulling timing up top. this was with 1.7 60'ft. I ran 12.6 stock with a 2.2 60ft' Im unsure what the traps were when she was stock. I should be running 11.5's with a good tune.

E55Bullet

I have run higher traps with slow 1/4 times, and slower 60ft. I consistency run 11.9s with no problem at all, cold. hot, first run, last run...so on...

Benz-O-Rama

You're too kind.

Seeing how you kicked my butt in golf today, what do I owe you?