Low Dyno Power Reading?

[T.D]

Hey, I just got my car serviced yesterday at RE Customs (great customer service btw ) and since I only just purchased it about a month ago, I decided to put it on the dyno so I could see what sort of power it was making and to check the a/f ratios.

Anywayyy, lng tory short, the car has a REALLY low power reading. From the sheet below, you can see it only makes 148.6rwkw, which is fine for a stock car (after scouring through the forum). Problem is, my car isn't stock though.

Here are some details:

'97 R33 GTS-t, manual

120,000kms

3" catback exhaust

Blitz Front mount

Blitz pod

Still running the factory dual stage boost setup, but with a low/high of 7/10psi (due to exhaust its running more than standard I presume)

No boost leaks from what I can tell as it idles fine and has consistent boost, except for first gear, which doesnt really build too much boost before it revs out =/

Any idea what's the go? I asked the guy (Ray I think it was) and he said that's pretty normal.

Bear in mind I am still running the stock dump/front pipe and stock cat, but judging by other member's figures, mine still doesn't add up even if I did do the turbo back exhaust:

http://www.skylinesaustralia.com/forums/R3...+low+power+dyno

http://www.skylinesaustralia.com/forums/Rb....html&st=40

Any ideas?

[R33 Eddy]

Mine made same power with the same mods

[Harey]

Do you have a dyno with boost pressure?

A tune will unleash the power from the mods you have.

[jarrod83]

Hmmm its been a while since i have looked at some stock powered dynos but your car doesnt seem to much down on power considering the mods you have, i think the skylines come out with 135rwkw standard and you havent really got any power adding mods so your not doing to badly.

You have an air pod.. but if its not set up properly so that its sucking in heat from the engine bay you often lose power, you have the least important part of your exhaust system so you cant expect too much gains from that and your last mod being the intercooler, which doesnt really add much if any power.. especially if your not running higher than standard boost.

if your down on power its not much and would more than likely be the stock cat, personally i would stick on a full exhaust, you will really be surprised off the difference that makes

Jarrod

[StealthX]

I'd say that's pretty spot on for what your car has... You've still got the stock dump and cat, both if which are a major power sucker, there's no use turning up the boost if you still have a restrictive exhaust. What sorta power were you expecting? It's maybe a tad low considering from the factory they make 180kw or so, I'd say with your boost you should be seeing about 150-160kw to the ground...

Is it a healthy motor? Good compression? If the tuner says it's all normal then the first thing I'd be doing is getting an aftermarket dump and a high flow cat, then see what power it makes. Max safe boost you can run on a stock turbo is 12psi. That should net you almost 200kw at the wheels.

Good luck fella!

Edited September 9, 2010 by turbo x-trail

[paulr33]

sounds reasonable ish

R33 GTST manual boost is 7/9psi switched so with an exhaust i dont think youd see a 3psi gain magically

it will flow more, but dont know about an increase to 11psi ,but as the others have said, all the power is locked away in the stock ecu tune

[blk15]

You definitely need to upgrade the dump/front/cat to gain more power.

I would be looking at doing the exhaust as the first step in all turbo cars if your chasing power.

[T.D]

Cheers for all the replies everyone

Mine made same power with the same mods

Fair enough then, cos I saw the power from the other topic I linked in my first post and it made the exact same power wit less mods lol

Do you have a dyno with boost pressure?

A tune will unleash the power from the mods you have.

Nah, sorry I don't but I shoulda asked for one. Doh! Yeah a tune is definetly on the cards

Hmmm its been a while since i have looked at some stock powered dynos but your car doesnt seem to much down on power considering the mods you have, i think the skylines come out with 135rwkw standard and you havent really got any power adding mods so your not doing to badly.

You have an air pod.. but if its not set up properly so that its sucking in heat from the engine bay you often lose power, you have the least important part of your exhaust system so you cant expect too much gains from that and your last mod being the intercooler, which doesnt really add much if any power.. especially if your not running higher than standard boost.

if your down on power its not much and would more than likely be the stock cat, personally i would stick on a full exhaust, you will really be surprised off the difference that makes

Jarrod

Oh ok then, fair enough. I thought that the increased boost along with the 'cooler would be enough to net some gains, but it seems its running stock power levels. I guess a dumb/front pipe and high-flow cat is next, just before I get it tuned

I'd say that's pretty spot on for what your car has... You've still got the stock dump and cat, both if which are a major power sucker, there's no use turning up the boost if you still have a restrictive exhaust. What sorta power were you expecting? It's maybe a tad low considering from the factory they make 180kw or so, I'd say with your boost you should be seeing about 160 - 170kw to the ground...

Is it a healthy motor? Good compression? If the tuner says it's all normal then the first thing I'd be doing is getting an aftermarket dump and a high flow cat, then see what power it makes. Max safe boost you can run on a stock turbo is 12psi. That should net you almost 200kw at the wheels.

Good luck fella!

Judging by some of the figures other members have run, I was expecting somewere within the vicinity of 160-170rwkw. I haven't checked the compression of it yet, but I'll definietly get that done before I purchase anything for the time being.

Thanks for all the replies so far, I'll update this topic as soon as I get it sorted (if I get it sorted) so for future noobs like me, they can use it as a reference

[R31Nismoid]

+/- 15rwkw, suddenly you are on 165rwkw

Sounds fine to me.

[STATUS]

+/- 15rwkw, suddenly you are on 165rwkw

Sounds fine to me.

Yeah sounds about right. It reads on average 15 less than drdrifts, mine and rob at sabbadins at that sort of power..

OP- Just do all your mods and re run it on the same dyno, don't care for the actual figure just concentrate on the gains made, RE's is a great shop.

[works 510]

Was just going to say, possibly a more conservative dyno compared to other shops.

On that note, without hijacking the thread, how much variation in a power 'reading' will you get with playing with the dyno corrections, or just leaving them at zero?

[boostn0199]

Yeah dont worry about it RE dyno is low reading compared to others so its nothing to worry about.

[scotty nm35]

Definitely low reading, 25kw down @ 300.

[Moodles2]

I've seen a bog stock R32 GTR make 155kw on the RE customs dyno.

[KiwiRS4T]

Cheers for all the replies everyone

Fair enough then, cos I saw the power from the other topic I linked in my first post and it made the exact same power wit less mods lol

Nah, sorry I don't but I shoulda asked for one. Doh! Yeah a tune is definetly on the cards

A tune is not on the cards until you get some means of tuning it. If you have the money get a Link or Vipec or PFC ...or an e- manage, Z32 ecu with Nistune etc . Depends on where you want to go with more power mods later. Ask your tuner for suggestions.

[Rolls]

Absolutely normal, I've seen them read as low as 120kw with stuffed coils and things like that.

Ground the boost solenoid so it runs 10psi all the time and get the ECU remapped with new plugs and coils if they necessary. Should see 170-200kw depending on the dyno.

sounds reasonable ish

R33 GTST manual boost is 7/9psi switched so with an exhaust i dont think youd see a 3psi gain magically

it will flow more, but dont know about an increase to 11psi ,but as the others have said, all the power is locked away in the stock ecu tune

I've seen 12psi with a free flowing exhaust before.