R33 Gts-t Dyno Graph

[cameron]

Hi everyone,

Last year at a car show we got our R33 dynoed with the following mods,

hks bov, cat back 3" fujitsubo exhaust system, turbo smart boost controller (red one), blitz sus pod filter and 12 psi on stock turbo, ecu and intercooler.

At that time we had the problem of a miss fire because of the spark plugs not gaped to .7 so it was missing on the dyno but we still got

162rwkw on a hot day. we also had a slipping clutch

Tomorrow were taking it in again on the same dyno to see what we have gained.

the list below are the mods that we have added to the top.

Heavy duty clutch, 3" dump pipe, FMIC, high flow cat, 14psi of boost. - we have reset the ecu after installing all of these mods.

i'll post the dyno graphs tomorrow.

What do you guys/girls expect i would get with these new mods ?

[Husky33]

170rwk

[MJ]

i just got mine dynod with the mods in my sig which are pretty much the same as yours for 181rwkw. Thats with the safc playing up and still not tuned properly

[cameron]

if we got 170rwkw's i'd be dissapointed

im aiming for around 180 - 200rwkw

any one else with similar mods what KW's did you get ?

[Nizmo]

awww us west aussies only count in rwhp .... not kw's! my guess is 260rwhp without the SAFC which you made no mention of. With an SAFC i would guess 280rwhp

[Evil]

i've got and safc II, cat back, k&n panel, fmic, stock clutch (gasp!) and 9 psi (avcr) = 178rwkw (dyno chart in my photo gallery)

[R31Nismoid]

awww us west aussies only count in rwhp .... not kw's!

Ya... you WA people are weird.

Not to mention the Dyno figures you guys get and the lack of 1/4mile times :wassup:

im just having a stirr :headspin:

[benm]

I think you would be doing well to get 180+ rwkw (241rwhp)

Different dyno's will give different readouts (as I have found out over the last 18mths).

Edit: '95 S1 w/ 85,000km.

For me (in order):

(Unigroup)

* FMIC

* HKS Pod

* Daiken Exedy Organic Sports Clutch

* Nismo Cat-back

* 12psi

* Stock Turbo

* Stock ECU

= 192rwkw (257rwhp)

(Unigroup)

* FMIC

* HKS Pod

* Daiken Exedy Organic Sports Clutch

* Custom 3" Front/dump + 3" Cat

* Nismo Cat-back

* 12psi

* Stock Turbo

* Stock ECU

= 203rwkw (272rwhp)

(Unknown at Western Sydney)

* FMIC

* HKS Pod

* Daiken Exedy Organic Sports Clutch

* Custom 3" Front/dump + 3" Cat

* Nismo Cat-back

* 12psi

* Stock Turbo

* Stock ECU

= 186rwkw (249rwhp)

(Croydon Racing Development)

* FMIC

* HKS Pod

* Daiken Exedy Organic Sports Clutch

* Custom 3" Front/dump + 3" Cat

* Nismo Cat-back

* Bosch 040 Fuel Pump

* 12psi

* Stock Turbo

* Stock ECU

= 180rwkw (241rwhp)

So as you can see different dyno's and different days (the above UniGroup days were both 30+) certainly make a difference. I certainly noticed a "seat of the pants difference" between #1 and #2 and also #3 and #4 (no mods were done between #2 and #3) but the Dyno's didn't show this.

[Jay95R33]

As Benm was saying, it's too hard to 'guess' what power your going to get cause every dyno is different.

The important thing is that you get a gain.

I would take your old dyno print out along when you do the new run and then compare the two graphs (as long as it's done on the same dyno).

Just as a comparison (for what it's worth), mine has pretty much the same mods as yours but at 12psi and did a 169rwkw.

Again, it's all about getting a gain on the last run, and also, outright power isn't everything. I only gained about 10rwkw at maximum power, but I managed to get rid of the flat spot in the mid range. Getting rid of that gained me about 34rwkw in the mid range !!!

J

[Guest INASNT]

Ya... you WA people are weird.

Not to mention the Dyno figures you guys get and the lack of 1/4mile times   :wassup:  

im just having a stirr   :headspin:

LOL this is so true. Looks at GTSt-vspec who still hasent run a 1/4 time but wants 400rwkw

[cameron]

Hey just got back from the dyno and it was done on the same dyno as last time (shoot-out mode).

I'll post the graph tonight.

We got a max of 184.5rwkw's (247.4hp at rear wheels) on the last run. that was with some more boost. but the a/f ratios were going stupid.

With the last run we were running 14.5psi which the a/f ratios were leaning right out to 30.0 which isent good. but on 12psi we got a/f ratios of 12.4 so we left the boost on 12 intill we can get bigger fuel pump and injectors. if thats the problem?

We are pretty happy with the results going from 162rwkw's to 184.5 rwkw's just in (front mount, 3" dumpie.) and in a month or 2 were gonig to bolt on a bigger turbo and do fuel pump and so on and chuck it back on the dyno

[DezertEagle]

My stocker made 136.7kw..... thats all i have to say

[riggaP]

IMO dyno figures mean 2 tenths of sweet FA. Get to a track to find out how much difference the mods have made.

[cameron]

we noting trying for power we were just seing what the difference in mods made to the car.

unfortunaly we live 4hr's away from the nearest track so its not every week we can make it out their.

with the first list of mods in my first post (with out the miss firing as we fixed it) we got a 14.1 pass on the quarter at 103mph on street tires. but we had a really really bad slipping clutch.

So were going to take it down again next month and see what the outcome is. were hoping for a high 13 or better

[paulr33]

i wouldnt put on the turbo yet, id concertrate on upping the torque low down, do the turbo later, check out some of syneykid's posts on what else you can do before the turbo

i wouldnt run 14psi without some form of fuel control, even without an safc, probably 12psi max

your just asking for shit to go bang - this explains why yours a/f's = psycho

just cos you are seeing more power at 14psi doesnt mean its good power, probably doing damage than good

you'll probably loose power adding more boost as the ecu corrects the timing and stuff so it doesn't go bang.

im no expert but this is what i've learnt anyway

[Guest Robo's]

Show us your A/F ratios!!. You should have some sort of controller to flatten out the curve.

[Guest INASNT]

With the last run we were running 14.5psi which the a/f ratios were leaning right out to 30.0 which isent good.

LOL 30:1 a/f ratio is like running on petrol fumes!!

[Guest Robo's]

Sounds like something went wrong with your dyno at the time. Ive had a few funny readings like that

[franks]

agreed that dyno figures can be somewhat misleading but i believe you can get a rough estimate from a dyno graph, and thus, they are a tuning tool - i wouldnt class them as being an accurate reader of power.

comments about track times are abit more valid however i wanted to say that an ET is sometimes pointless aswell. the best indicator of power is the terminal speed.

fwiw, i have recorded a 199.5rwkw on c&v's dynodynamics dyno. ran a 13.8s ET with a 2.1sec 60ft and 99mph terminal speed. goes to show that the car was tuned for mid-range...

mods are as follows:

-powerfc

-avcr @ 0.8bar

-fmic

-full exhaust

-stock airbox with hiflow air filter

[Abo Bob]

I think these before and after threads are good value. Everyone knows they are all relative and that nothing is perfect, it's just an indicator to add to your knowledge base.