Dyno Sheet For R34 - Scrutineering

[nuffsaid]

Hi guys

I had a full 3" exhaust fitted today on an otherwise stock GTT.

BATMBL 3"split dump and front + big bodied stainless steel cat + cannon cat back with midmuffler/resonator.

First impression, loud! haha power wise, didnt feel that much of a difference, a tiny bit better but not like a 20-30rwkw gain. Boost increased by roughly 2psi from about 5000rpm onwards.

Anyways, I hadnt chucked my car on the dyno before so decided to give it a go. I know the R34 manual GTTs make roughly 140-150rwkw in stock form.

Put mine one, 163.5rwkw. Quite disappointing actually. I wanted to crack the 170 mark, I know all dynos etc are different etc etc. I thought my car woulda made 150rwkw stock, plus another 25 at least from the exhaust.

Here is the dyno sheet, what do you guys rekon?

Tuner recommended getting a FMIC as inlet temps were getting high.

Else he said everything is running fine (which is probably the best news).

Too much expectation with the exhaust, everyone was telling me how it would make a huge huge difference, hahaha ah well, the saga continues.

Thanks all!

Edited February 20, 2006 by nuffsaid

[RBFIRE]

163kw @ 25 PSI_g?

wat the hell?

please explain?

the power graph look nearly perfect?

very linear power.

U got POD?

i believe POD makes a different.

did u feel diferent with BATML dump?

i gona be instal BATML split dump in the weekend, and wana throw it onto dyno, c how much am geting,

interesting~!~

[AlexCim]

each side of the graph is the scale for either line. So its 10psi boost (lower line)

Why the hell do they do dyno graphs with speed, should be RPM dammit

[nuffsaid]

Oh so I am making 10psi with this setup? Fair enough then, no need for EBC or boost tap then haha

I know its a linear curve and all which is good for a stockish car. I dont have a pod, just a apexi panel filter. And I dont think Im making 25psi, I believe its 10? Correct me if I am wrong hahah And with regards to BATMBLs pipes, doesnt seem like it made much of a difference, maybe its just my setup but the 16rwkw claim for the dump pipe alone just doesnt add up with my sums.

I expected:

10-15 from the split dump

maybe 5-10 for the cat

and another 5-10 for the cat back.

So worst case should be a 20rwkw gain, best case, 30ish??

Edited February 20, 2006 by nuffsaid

[Links]

From the sounds of it you probably made 10kw+.. not too bad.. would be interesting to put in a power fc now and see how it goes..

you running a bleed valve?

pity you didn't dyno it before..

Edited February 20, 2006 by Links

[nuffsaid]

Yeah I wanted at least 20rwkw, goes to show that maybe an exhaust isnt what its all cracked up to be, I now find it hard how CES can claim to make 45rwkw on a S15 full exhaust.

No bleed valve no nothing, pretty much stock except for exhaust and apexi panel filter.

True, I should dynoed before, maybe the car wouldve only made 140kw, make this a gain of 23. The R34 HPI project car made 148 stock. Satanic's website mentions a R34 with only a catback and panel filter making 175! hahah ouch

[GorGasm]

Yeah I wanted at least 20rwkw, goes to show that maybe an exhaust isnt what its all cracked up to be, I now find it hard how CES can claim to make 45rwkw on a S15 full exhaust.

No bleed valve no nothing, pretty much stock except for exhaust and apexi panel filter.

True, I should dynoed before, maybe the car wouldve only made 140kw, make this a gain of 23. The R34 HPI project car made 148 stock. Satanic's website mentions a R34 with only a catback and panel filter making 175! hahah ouch

<{POST_SNAPBACK}>

i dont think the exhaust would make 25 kw extra.. maybe 10. That S15 might make a 45 kw gain on a full mod setup, turbo, ecu and supporting mods.

[RBFIRE]

i fink the BATML claimed the new split dump front pipe and the new Hi-flow CAT with stainless steel inside claim 27kw increase for R32,

i am gona instal it in the weekend, on my r33

would be interesting to see wats the increase goin to be,

but i wont be dyno as stock, cos too much hassle, already got KnN and 3" from hks cat back.

got r34 intercooler and bleedvale on its way.

[E_Lu-SHuN]

hey Nuffsaid

thats good power...

considering my other mates r34 4dr tiptronic does 139kw with just POD filter..

163kw sounds good and round about right to me

[satanic]

Either this one is a little low or my one is a little high... but my first dyno run was when the car was dead stock. Pulled 156rwkw which mind you is from an auto.

Stock manual should get what you are getting if not a bit more... on that same day there was a stock manual who pull about 165rwkw from memory.

Just my opinion don't mind me...

[E_Lu-SHuN]

btw is yours manual or tiptronic?

[RBFIRE]

I know ppl will say that differnt dyno will give differnt reading,

but that much of differnt?

aint there a margin of accuracy for all the dyno?

Edited February 20, 2006 by ZXFIRE

[nuffsaid]

Gorgasm: from what it says here http://www.cesracing.com.au/Products/ it looks like 45rwkw on a stock S15 except for their full exhaust and pod filter. Maybe they respond better to exhaust mods coz perhaps their stock piping is very restrictive, and the R34 not as much. Maybe they didnt mention the other mods

Elushun: its a manual

Satanic: really? coz I saw a HPI DVD with a stock manual GTT, pulled 148rwkw.

ZXFIRE: Yeah the claims were for a R32, but seeing as a R34 has more power, I wouldve though that the gain would be more if anything. note: I have the split dump and that huge cat that flows at 706cfm.

Edited February 20, 2006 by nuffsaid

[E_Lu-SHuN]

oh for manual, yeh that does sound abit less...

[nuffsaid]

oh for manual, yeh that does sound abit less...

<{POST_SNAPBACK}>

Ahhh dayam I didnt need to read that! haha =P

[satanic]

Well the dyno reading that I got (156rwkw) was at a dyno day using a Dyno Dynamics dyno in Shootout mode.

As I said, I don't know whether your reading is a little sad or my one is a little happy.

Everyone else on the day seemed to get quite accurate readings though. Both Links and d00dz were also at this and can probably confirm

[Abo Bob]

Whose dyno was that Stan?

There is definitely enough variation in dyno readings to account for what you got there. I got 162rwkw from full exhaust, panel filter and more boost. That's with big name parts too.

Putting a fmic on will on decrease response, you will not get any more power from it. I would go so far as to say that if I had my time again I wouldn't have put a front mount on until I upgraded the turbo. The r34 smic is bigger than the r33 one.

I don't think there is anything wrong with what you've got there unless that wierdness at the top there is not dyno operator induced.

[satanic]

It was the OCAU dyno day out at Dumar Automotive? From memory it was out near Berowra...

I'm still in touch with a few other guys from the day (TT Supra and Ford XR6 Turbo) and they are both getting consistent readings.

I'm confused now... I thought 156rwkw was quite good for a stock car

[IanH]

With a full exhaust and panel filter (nothing else) I was making 168rwkw on a manual so those seem OK to me

[E_Lu-SHuN]

yeh stan...that sounds abit too mux...

anyways...show us what you put down now when we have the dyno day , i wanna seeeeeeeee