Hi, me and Paul20vturbo went to powerstation today to have a power run, fueling check and det cans.
Mine was the first one on, i wasn't sure how it would do as my gearbox is nearly gone and the noises it was making down to powerstation was horrible (high pitched humming and rumbling very very loud, not wheel bearings)
My spec is- gt28rsr,sip,apexi,h&s downpipe,decat,2.25" cat back,fmic and gtec2.

On my first run he said he heard abit of det at 5800rpm but then went after that (he thinks the ecu pulled the ignition back for afew seconds). The fueling was at 0.8 lambda all the way to redline which he said is spot on ( i saw this with my own eyes too )

On the second run he said it felt abit hesitant and around 5k the widget flashed [/b]THROTTLE POT FAILURE[b] Now it won't go off, he thinks that could effect my readings as at 5800 i get a big dip in my graph.
Has anyone had this fault code before or know what it means.

Anyway on my first run i got a good result 319.4bhp and 273.4 ibft torque at 1.35bar.
Heres my pic of the graph-

http://i65.photobucket.com/albums/h227/YellowAshes/P230608_164701.jpg



Paul's car stats are- t28 Hybrid,pro alloy fmic,k&n panel filter, decat, blueflame cat back.

His first run at 1.25 bar was good, nice flowing graph he made- 288.0bhp and 243.8 ibft

On his second run he upped the boost to 1.3bar but it only made 2bhp difference.

Heres the pic of pauls 2nd run

http://i65.photobucket.com/albums/h227/YellowAshes/P230608_1646.jpg

What do you all think of the results


Also there did a graph with a comparison of both cars-

http://i65.photobucket.com/albums/h227/YellowAshes/P230608_164702.jpg

Imo good results

Ben

Thanks Ben, not quite as good as yours, that ti chip seems to work really well on yours.

Ash

Do you know why the drag is high as its the same on mine.

I personally dont think its all down to the chip

Ben

I am not sure why the drag is high, my gearbox has gone on mine and making horrendous noises so that might be why on mine.
The rollers is used for lots of tuning including by Subaru themselves so i would have thought it is quite accurate. ther rollers might have high drag for some reason, but i am happy that it got 319bhp (even if it is really about 300bhp) can tell everyone that.

Your chip has alot more advance then mine so will give more power, but i got very slight det at 5800rpm.

you need my full fat exhaust system to keep the torque building to give you more power

Jamie

Same here even if mine is really 330bhp, but its all about the torque

Agree with Jamie,you need a bigger exhaust

Ben

I think jamie wants me to have his its a very nice exhaust but abit to loud for me. I am not sure why i have that dip at 5800, is it the chip or the throttle pot failure(think maf maxed out)

Ash

If youre getting a bit of det at 5800, maybe it's backing off?

I only got abit of det on the first run (he said it wasn't very bad though), the 2nd run i dropped the boost by 0.2bar and had no det but still same drop off at same point. Can't feel it on the road so not too fussed just wondered why

ash_p can you give me wheel HP and wheel torque for each car?

Ash p's wheel hp is 234.... torque is 273 ft lb

Pauls wheel hp is 208 .... torque is 247 ft lb

Nick

Good results mate.

I'd defo find out what that problem is, esp with that size of dip.

Someone on here will know. Post in general maintainance, as some people dont come in here.

Ross

Thanks for wheel hp figures

The cars don't feel like they have low bhp, mine is so much quiker then a stock coupe. Mine is running all the correct mods for 300bhp so if we went by the wheel powers it would mean mine is far to low on bhp. I am not sure if the torque is right as i was expecting slightly more, going by how much benny got on a similar setup.

Thanks ross, not quite as fast as yours but what do you think to the spool up i was quite surprised it spooled the same as the hybrid.

Ash

Can you get better scans pls? It's a bit of a pain looking at them like this.

They was taken on my phone, so only way i can post them up. If i click on them i can see them fairly clear, but not sure if your seeing them different with it going through photobucket.

Very impressive ash.

My nephew said he spotted you and jamie ripping about in sawley last week and commented on how well it went/sounded.

You must be chuffed with your R/R results.....enjoy

paul_v bet your glad u havn't done a compare with ash then?. Mines running 50bhp more than it did so very happy with the results. Made for than the around 270bhp you normal get with this setup. Ash also made a big improvement on power so both had a good day. Only problem is dnt understand how they work out power drag and wheel power


paul

Thanks paul, yeh me and jamie was trying to find my noise, which is now my gearbox . Will be round jamies tomorrow taking his gearbox out

I wasn't giving it much when your nephew saw me due to the noise i had, it was only on low boost its very quick when i can open it up. I did see your car on your drive looking very nice and shinny.

Ash

Hi results look good, can't wait until mine is putting those sort of figures out!

Anyway a quick question: How much did they charge for runs?

I was going to go last saturday with some people off here but my car was being repaired at motormech so I couldnt make it, but I would stil like to go as I am at the 'ring in 3 weeks!

Cheers

Paul

I just want to say that the wheel hp is very low. I got 240 whp on my car and I still uses the original Garrett
I know that RR places don´t give exactly the same result (it diff a little bit), so compare the results are more or less for fun.
When I was at RR place last year I had 37 hp in transmission losses. You have so much more. Do you run with mega Toe out

26 % transmission loss is again fiction. Use the estimation wheel power plus 10 divide by .9 = nearer 270 bhp approx 15% trans loss. Ambient factors look a little odd, inlet wont be ambient or below it for sure thats inflating things a bit, whats oil temp about 22deg c?

Rich

Don't worry Ash, the MAHA dyno that Powerstation use is very good. No matter what Rich says the torque and bhp figures are pretty much spot on

Hold on 319BHP but only 234 WBHP . For 319BHP you should have nearer to 280 WBHP. I smell pub figures If i go there i should make 400BHP

Based on the following spec running 1.35bar:

GT28RSR
SIP
Apexi AVC-R
3" H&S downpipe
Decat
2.25" cat back
FMIC
Gtec2

If you take 234bhp @ wheels using a 15% transmission loss that would give Ash 275bhp... so basically the same power as a standard coupe with a chip and breathing mods? 273lbs/ft isn't particularly high either.

So it's 275bhp or 319bhp... the latter is about right for the spec, the former would suggest low compression!!

I have the same spec except for light headwork and mapping I got 327BHP @ 1.2 Bar that's 281WBHP so something is wrong??

I think the power figures are about right but the power drag and power to the wheels seems totally wrong. I no for a fact my toe in is fine it had the tracking done 2 weeks ago. Also ive been on the rollers at noble motorsport with a totally standard car and made 237bhp so theres nothing wrong with my engine. And ash's car had good power for this setup as per what flea said. My torque does seem low would it be my standard down pipe?. I did make more torque this time tho

paul

Paul I hope you know that the only thing that they measure is wheel hp. The fly wheel figure is just an estimation from the RR place. I don´t say that your car is wrong in any way. I´m starting to think that maybe that RR place is sh*t

yep its looks that way. Both cars feel quick now and im sure mine feels quicker than 207bhp at the wheels. I am aware that they dont no the power at the flywheel. I do no for a fact that mine is allot quicker than a standard coupe

paul