Mafless Tune Surprised and Disappointed!

[Joey_21]

No, you don't need any add-ons to get some extra power, since the standard V8 is tuned quite poorly. I'm not sure if this is a deliberate marketing strategy to keep the "halo cars" significantly faster, or just "insurance" against abuse and potential breakages. If course, if you do have some mods done, you can get more benefit from the mods by having the engine re-tuned.

My VY2 SV8 is totally stock, no air filter, muffler change or even a sticker. It was dynoed stock at 240rwhp. After a tune using HP Tuners LS1 Edit(?) software it made 270rwhp. This is not a aggresive or dangerous tune - you'd never know the difference during the daily drive. Gains were across the entire rev range but most significant in the 4000-6000 rev range. I also had the speedo recalibrated and the auto shift points tweaked.

hey mate notice any changes in petrol

 

[Baldric]

if your after serious torque. then maybe a bigger cubed engine or forced inducion would be a better route to take ?

as for comparison sakes.
1st pic is the stock ve table

2nd is a mafless tune im woking on

 

[jonnyturbo]

well yeh that's what im a bit p***ed about. rather than spending all that dosh on these upgrade's i coulda just suprcharged it for the same amount.... too late now :bang:

 

[Baldric]

how mch did you actually part with and do you have a dyno sheet ?

 

[jonnyturbo]

1st upgrade- mild cam, valve spring's, pacemaker's and 2 3/4 no cat's, mafless tune= $3800nz ( i think ) which got me 225rwkw.
2nd upgrade- 92mm throttle body, "fast" inlet manifold, bigger stainless valve's and titanium seat's, ported & polished head's, did new cam chain and high flow oil pump at this time= $8400nz and that got it up to 247rwkw's.....kinda expected more.....

 

[jesse3.8]

my mates vxss got 327kw after exhaust, extractors, c.a.i and mafless tune he was pretty happy

 

[BANKS]

1st upgrade- mild cam, valve spring's, pacemaker's and 2 3/4 no cat's, mafless tune= $3800nz ( i think ) which got me 225rwkw.
2nd upgrade- 92mm throttle body, "fast" inlet manifold, bigger stainless valve's and titanium seat's, ported & polished head's, did new cam chain and high flow oil pump at this time= $8400nz and that got it up to 247rwkw's.....kinda expected more.....

I would be expecting 300rwkw minimum with that set up... somethings up

 

[danja]

Who cares what numbers you get? If it drives well, it drives well

 

[vnrockit]

don't worry about dyno reading take it to the track see what it does
i have a favourite dyno it gives me low figures but i know i can go to another dyno
and get a figure that says i have an extra 20hp
hows 273 on one dyno and 294 on another with nothing changed times don't chance from track to track that much

 

[BANKS]

Yeah discrepancies of 20kw between different dynos are common but not 53rwkw's, that just seems really low for the type of mods he's got.