pooeater

wastegate not ported, spring ratings, got a yellow sticking on the actuator= 10-12.5psi but my mapper put a stronger spring in so be a red=15-18psi will post graph up tomorrow

prodriverules

iTrader: (52)

Im not doubting the car Iain so no need to bite mate but if Simon say's it looks laggy on the rr then i for one would have no reason to doubt it as after all he has mapped more scoobs than most.

Big 'D'

Welcome to come along but I am confident it will run the same if not damn near it, christ I still had 0.1 of a bar to go heaven forbid I had posted up with a 390bhp VF35 lol

The responce my car got at USC 2010 alone was enough for me there were countess comments on how fecking fast it was by comparison to much higher bhp cars, my car is setup for dragging really and it makes great use of the 35s potential and the 35 compliments the cars weight, setup and gearing very well indeed

Cheers Iain

Big 'D'

Again not aimed at you fella and the performance of my VF35 in 3rd on the Dyno and how it runs on the road are 2 totally different animals

Cheers Iain

Big 'D'

I think the springs go, green, yellow, blue, red. The red with a FMIC and the ported wastegate will see a base pressure of approx 1.0

Jesus get that puppy ported, it will be boost creeping but you will probably not see it as you are running such high boost, you can test it yourself by either setting your boost controller off or connecting a pipe between your turbo outlet and the actuator (bypassing the solenoid) and go for a wide open throttle run in 3rd and 4th from about 3000rpm if boost creep is there the pressure will continue to rise way above your base wastegate pressure.

Cheers Iain

pooeater

just looking at my graph @3500rpm im at 1.7bar your is 0.5bar u sure its a vf35? will post tomorrow

Big 'D'

I am certain it is

Cheers Iain

prodriverules

iTrader: (52)

How can there be such a difference in the two?

Big 'D'

Overall mods and setup I guess, would be nice to know the spec of the engine as its pushing alot of gas very early on to make that spool

Cheers Iain

seddomyster

iTrader: (9)

amazin spool there pooeater. you havent got a 2.5 lump in that have you?
does the vf34 suffer with boost creep?

Sabas

iTrader: (22)

Hi, congratulations

sorry if it is on here, but do you have a classic or newage?

Is it a standard engine/rebuilt/ forged? What about the gearbox?

Doesn't make a difference to me, just can't see it mentioned.

Also, what is AT and where do you read it from, I guess IT is inlet or intake temperature?

Big 'D'

Thanks mate

Its a V3 Sti (Classic) 2.0 EJ20K engine with std internals, clutch and gearbox

AT I guessed = Atmospheric Temp and IT as Intake Temp.

I will get another dyno done at the end of the month, and take photos of everything inc sensor placement etc if it will keep you lot happy lol

Seems some people on here are just way too keen to dismiss things.

Anyway I cant really be bothered contesting it the proof will be in the next Dyno run, if I had known more about the temps etc I would have had it sorted on the day of the last run but never mind.

Cheers Iain

Shaun

Iain,
If you consolidate any more dyno runs you maybe best advised to take it to another DD Rolling Road..... that would prove beyond reasonable doubt then. I am not saying this for my own sake (as it makes no odd's to me what your car makes), but for you to add "meat to the bone" for others of your set-up.

Just a thought.

Big 'D'

I tottaly agree

Cheers Iain

pooeater

sorry mate my bad its not a 34 but a 35

Big 'D'

I see your dyno run was in 4th which will give an earlier spool responce due to the higher loading on the engine, all of my Dyno runs up to now have been in 3rd so it would be very interesting to see what it would be like in 4th

Cheers Iain

pooeater

take it easy with with std internals, clutch and gearbox lol put some cash away and get it sorted this winter

Big 'D'

I would love to do the engine/gearbox work but I simply do not have the dosh, as testiment to the car it has been down Santa Pod 50+ times and is my daily drive too so even as std they can take some stick

I understand that its only a matter of time but bloody hell its a strong car

Cheers Iain

prodriverules

iTrader: (52)

Alright Iain id like ask a question mate,at what rpm do you reach 1.0 bar boost in 4th gear on the road mate?

Big 'D'

At approx 3200rpm why?

Cheers Iain

seddomyster

iTrader: (9)

hi mate didnt meant to say u had a vf34, orry about that. that was meant to be a dfferent question as i will be fitting one but wondering if these suffer boost creep

Big 'D'

I dont think they do mate

Cheers Iain

seddomyster

iTrader: (9)

thanks big d. dont they use the same actuators though?

pooeater

yea 34s and 35s have the same actuators

Big 'D'

The same actuator fittment yes but the over all spring rate may vary but these have nothing to do with boost creep really, boost creep is a state that occurs when the wastegate is open but the flow of exhaust gas is so great that the wastegate port chokes and most of the exhaust gas will then pass through the turbine spooling it up regardless of the wastegate being fully open and any boost control is ineffective to control this.

Cheers Iain

seddomyster

iTrader: (9)

thaks mate thats useful to know. i will look out for a stronger actuator just to get that bit more out of it. when one pops up cheap enough

Big 'D'

You probably will not get much if anything more out of it by fitting an actuator on its own mate.

Cheers Iain

seddomyster

iTrader: (9)

think i will stick with the standard an put funds towards my map. im feeling confident with the 34 but will have to see in future. thanks for help

midnight

iTrader: (10)

I cant believe this thread has gone on for 7 pages lol,the guys posted up the graphs and the results are there for all to see,who's looking at I.T/A.T temps. He has said he may well use another rolling road ,and if he produces the same results will people doubt that as well.


Seddomyster,we both bought our cars within 2 weeks of each other (2 years a go),and continued to mod them . I think you chose the vf23 & FMIC option,while i opted for the vf28 & TMIC,mines running really well, so whats made you opt for the vf34 -was the front mount making it to laggy

Big 'D'

I would put money on it that people will doubt it, as it seems that it has been widely accepted as not being possible, we will just have to wait and see

Cheers Iain