demonspeed

iTrader: (7)

I posted this in the dyno section, though i'm thinking it might be better here...

My buddy has a 99 Formula WS6. It has around 70K on it. He just took it to Rapid to have Mikey work his magic. Here is the mod list...

LS1 Motorsports Lid
K&N
TB Bypass
hacked off EGR tube
Hooker longtubes
ORY
Dynomouth
Taylor Thundervolts
NGK TR55s
LS6 clutch kit
160* stat
ported LS6 oil pump
Rollmaster (I think) timing chain
Crane spring kit
TR hardened (maybe they are chomemoly - I can're remember) rods
G5X3 on a 114.
4.10's
Nitto's

With all that stuff and a tune, it only made 380rwhp and 360rwtq. What is up with that? I would have thought it would have broken the 400 mark, but nope. You did read correctly that he is still running the LS1 intake. His gears are also whining like crazy, so that *might* be cause for some of the loss as well. Still, those 2 things couldn't add up to that much of a loss.

His clutch shows no signs of slipping, and he runs 92 octane or better.

I haven't talked to Mikey myself, but my buddy said he had to tune it in open loop. Mikey also mentioned that the car idled really well for that radical of a cam. He agreed that the numbers seemed a bit low for that combo.

I have no clue what to tell him. My buddy is pretty upset he spent that money to only get those results. What could be the holdup? Could it be that maybe they didn't send him a X3?

Any help or anything would be great.

Sky042

iTrader: (1)

Well if I'm not missing anything on your post your friend made 380RWHP with stock heads in the summer heat on a very stingy dyno(the one mikey uses in pottstown really is very stingy numbers wise) I'd say that sounds pretty good to me. Now if he has ported heads then it's a different ball game.

Ryan02SS

iTrader: (3)

I'm pretty sure Mikey now uses Pheonixville Performance's dynojet. My 1st two tunes were at Pottstown but my most recent was at Pheonixville. Funny you should say Pottstown's dyno is stingy because I laid down 399rwhp @ 386rwtq with my TR224 on stock heads there.

Sky042

iTrader: (1)

He very well might have moved his dyno services. Far as I know everyone who's used the pottstown dyno has gotten lower than normal numbers myself included the day I dynoed there for my stock numbers.

goober35

iTrader: (1)

I would say that the dyno and gears and LS1 intake would rob him of at least 30hp say like 10 each or so. What do you think.

Z-286speed

The LS1 intake will rob him of the most power, i hear that will take 15-20 rwhps away!

LS1derfull

Maybe that Pottstown Nuclear Reactor is causing low numbers? J/K
I do like 422 concrete hiway for fast street races though!

JDPZ28

iTrader: (3)

He still needs: ported tb, underdrive pulley,and a LS6 or better intake.
Then he should see at least 400.

foff667

iTrader: (2)

i definitly think the ls6 intake is the big factor here...get at least an ls6 and he should be hovering around the 400 mark.

SAM98WS6

I agree with the guys above but I would like to also point out manufacturer dynos runs can be manipulated to sell products like new cams and heads..out in the real world they never perform as good. Your numbers are still pretty good for what you have; on that real dyno.

CHRISPY

EXACTLY!

Those numbers are pretty good cam only with stock LS1 intake. Have him throw on a LS6 intake and ported throttle body and redyno/retune

algws6

iTrader: (3)

i rember a while back louis saying that the cranes might not have enough seat pressure for this cam. any signs of valve float?

Kenny D

IT NEEDS TO BREATH!

Kevin 276

What's wrong with those numbers I am confused... I don't think anything is wrong. How does it run at the track? Why does everyone get so bent out of shape with dyno numbers??? Your track numbers are the best gauge you could ask for.

DanZ28

iTrader: (5)

4.10's, LS1 intake, and no ported TB could cost you a good 25-30 RWHP. I live at damn near sea level on a moderately cool day and can't pull the numbers others are getting elsewhere with less mods, track times aren't bad though. No matter, I think 380 RWHP is pretty respectable..

Dan

SAM98WS6

I have an MTI Race Ported stock throttle body for a 98...if it will fit a 99 (you can ask Mikey)...you can have it for $100...no core...come pick it up. I switched to 90mm

I already sold the LS6 intake I had. TB wouldnt fit on a 2000 SS. they changed sometime around then

InsomZ

iTrader: (1)

if he changes to the ls6 intake he'll be around 400rwhp the 4.10 gears are losing him about 10rwhp as well.

demonspeed

iTrader: (7)

Well, this is a very interesting read. I'm sure he might feel a bit better once he takes a look at this thread.

I told him to go with the LS6 intake and throttle body before (especially since this cam NEEDS to breath up top), but he figured he'd still hit over 400 without it. I also feel the pulley would be a good idea, but he doesn't want to spend the money on one.

Now, would you guys say the 4.10's are hurting him by being so low, or do you think it's the fact that the gears need replaced?

Also besides tuning in open loop, he mentioned that it was a very conservative tune. I don't doubt Mikey's tuning abilities as he knows 100% more than I do, plus he has a name for himself, but I wonder why it seems he wouldn't have done much with the tune.

Also, you guys mention Pottstown... I went to a shop down there when I had my Mustang called Performance Specialties to get my gears put in. They had a dyno there... they were a bunch of filthy, shady reds. Is that's where Mikey was taking his cars? If so, I could see why they might be lower numbers

Thanks everyone for the replies! Keep them coming!

SAM98WS6

No Mikey goes to Phoenix now..Performance specialties sucks...ruined a set of gears for me and their A/F was off Im told.

Tuning in open loop is the norm now for big cams.

Tranzor

4.10s will make you dyno lower because of it being a lower gear ratio... the best thing for to get top M6 numbers is to dyno through a 10 bolt with the stock 3.42s.