pbalias

So I just came back from my DYNO run after installing the LG G5X3 cam and an LG "mail order" tune.

Needless to say, I'm NOT happy with the results. LG SWORE up and down that their G5X3, Pro Longtubes, and their tune would make an EASY 420-430 RWHP. I'm at 410. :-? Even all of their posted dyno runs show 430ish RWHP. What the heck..I'm so bummed. I was actually expecting a hair better than 430. I had the whole engine out, did the re-ring procedure, and lightly ported/polished the heads when doing the cam install.

My car is an '01 Z with 35,000 miles. Here is the before and after results. Anyone see different numbers with the same set-up? I'm convinced something's gotta be wrong.

BEFORE the CAM install...



AFTER the CAM install...



and this is what I was EXPECTING...



so according to these figures..i'm SHORT 21 RWHP and 20 RWTQ. What's going on???

2001whiteSS6spd

You need a dyno-tune.

JF-WS6

iTrader: (1)

I'd say your problem is the "mail order tune". Every car is different, so every car needs a custom tune, Get a dyno tune and I think you will be happy.

theblur98ss

iTrader: (71)

I agree...get a real tune and see what the results are.

ATXCAMAROGUY

iTrader: (4)

Definitely get a dyno tune man, besides some dynos read a little differently. You really shouldn't look too much into dyno numbers anyway, the track will tell the real story. Don't be a dyno queen.

amwellls1

Look at the difference in the air fuel ratios between your graph and the comparison graph. You cars running a little fat, that probably is some of the difference. Get a real tune in it

CraZee ZO6

Right there couldnt have said it better myself.
Look at your a/f especially downlow real rich compared to the other graph making good power. Thats why your torque is probably lower too and the car feels sluggish down low. A good dynotune will wake that car up 10-15rwhp easy.

1997bird

iTrader: (2)

+2
Also is your car an auto or manuel? What was the car mods on the posted graph from LG? Every car will be a little differant with the same mods!

1999vetteroo

iTrader: (15)

Did you just ask if this Z06 is auto or manual?

When doing mod's it's best to expect disappointment each time out. Relax, I agree with previous comments. A dyno tune should fix your issue. 406rwhp on a mail order tune is actually not bad. But right now your comparing two different things. One just doesn't compare to the other. Cheer Up!

1997bird

iTrader: (2)

Nope, read it as an 01' Z, meaning a Z28 Camaro. I was just asking if the LG Dyno graph posted was a F-body or a Y-body. A4 vs M6? If it is a auto, then what stall converter was used? Things of this nature are little details that make a differance on the dyno. He should be close after haveing the car tuned on the dyno.

99blancoSS

iTrader: (115)

With the LG LT's I'm guessing it's a z06. You've got a stock air box instead of a cai or what ever you put on vettes as well as a mail order tune will only do so much. Fix both those and you'll gain some hp

blkZ28spt

~410 rwhp cam only with a mail tune and the stock air box or whatevedr it is is not bad at all.

I wouldn't say you are short 21 rwhp. You stated that LG claimed "420-430", not "430", which would put you 10-11 rwhp down. Don't get so hung up on dyno numbers. They are not the ultimate performance measurement and as with most things there are many variables. Get it to the track and see what it'll do!

PREDATOR-Z

I agree with the graph, you're running rich. A good dyno tune with spark and fuel match will net you more.

JBsZ06

mail order tunes in general are better off being a bit rich...

Too lean and you'd blow that new mod to hell..

Remember one thing....dynos are great but they do not perfectly simulate road and track conditions...

I'm just shooting the breeze but most tuners tune for a dyno, get the number and before the car leaves the shop...fatten it up....

Heard this a thousand times..

Enjoy the car...(I'd bet your cars a blast to drive now)

cowboysfan

just by looking at A/F ratio I'd say get it dyno tuned or track tuned if you have software. but, yea! I agree with proper A/F ratio you can gain some hp/tq on top.

pbalias

thanks for the insight guys...i feel better now knowing it's probably just some tuning/tweaking. i do have HPTuners and am ordering a WB o2 so I'm sure i'll iron it out in due time. now i can see the point of LG possibly fattening up the tune a little on the mail order tune. i'm sure they want to cover themselves and not have motors start blowing up.

thanks again for your ideas!

99blancoSS

iTrader: (115)

rich is safer than lean

speed_demon24

iTrader: (6)

show me an 01 Z28 with LG headers, the ziptie mod, and a borla stinger catback.

JonPMH53

I agree on all as well...mail order tuners put everything on the safe side since they dont have the car in front of them to tweak it properly. 10 hp or so is not uncommon to get with a good dyno tune. Still, 410 at the wheels is pretty badass!

kyles2000z

iTrader: (8)

youre only 10 hp away from your goal, not a big deal. get a real tune and youll get what ay wanted.