CANRX7GX

iTrader: (1)

The first time i dynoed my fc i had : 137.8rwhp/115.5 lbs ft of torque.......... that was with just a full racing beat exhaust (headers to cat-back) and apexi filter....

thennnnnn...... i got wires/factory plugs/rebuilt engine with street port/ underdrive pullies and im at.........141.6rwhp and 127.4 lbs-ft of torque .......

and im confused......... i know street porting doesnt add much power, but does anyone know why i might have gained so much torque over horses???????
<--- as you can tell by these im really confused... my tranny whines alot ... i think that might be a reason ??? loss in power thru tranny?? i dunno...........
well any feed back or comments are welcome

dyno result here: http://www.telusplanet.net/~lui/EDWIN.jpg

BDoty311

Are your 5th/6th ports operating properly?? If they are stuck shut your torque will rise, but your HP will drop off dramatically in the top end.

marcus219

Fairly large street port? I think its just the reality of n/a's...looks like you were making hp all the way to 7k though, porting probably helped that over a stock port motor, which stop making power at like 6-6.5k. Get the trans checked out and go from their. How does the car feel compared to a near stock setup?

marcus219

HP climbs to 7k though? Are the ports wired or working off pressure?

BDoty311

Ya but the toque drops off really bad, it should stay pretty flat.

CANRX7GX

iTrader: (1)

ports are completely removed and apoxy work to round off the ends so they are open FOREVER!!!!! hahahha

marcus219

hmm..ports are open..what would cause torque to drop like that then?

BDoty311

**** I dunno whats wrong then. I definately think you should be making more power. Who did your rebuild? Streetport?

marcus219

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marcus219

Is their really anything wrong? I mean street porting can add like 10-15 hp with decent size ports...only mods I would think that would really be noticeable that he has are full exhaust ....I mean, people are having to do crazy size ports to "hope" for 200rwph (ie flybye's port, awsome n/a but all that work for 220rwhp goal), and that was on a S5.

BDoty311

My car has similar mods, and Im pretty damn sure it has more than 140 rwhp. Take your car to a drag strip and tell us how that goes.

CANRX7GX

iTrader: (1)

i only got a standard street port... to rb spec.... done i got it done by a local that does alot of rebuilds... i woulda tried myself, but i just have no tools...
oh and also they guy running the dyno ran my car in 4th gear............ i dont think that would change anything...

marcus219

Bdoty, that 14.63 you ran is with those current mods?

BDoty311

Ya with the mods in sig, I just got GXL hubs/wheels/LSD so that should cut off a few tenths. Thats also with a STOCK Y-PIPE.

drago86

Ignition break up up high maybe? looks like it a lil, but id expect it to be more spiky, torque should not drop off that badly, is your vdi working????

marcus219

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pengarufoo

need to see a dyno graph with the afr's plotted, get on a dyno with a wideband input. You might just need some tuning. Greatest ports in the world won't make **** for power if the engine management is not cooperating.

rotary>piston

replace your tranny and rear-end fluid with correct weight oil. If it whines you may be low on oil, and if the oil is too thick it will also rob horses. If the tranny is low, that would be a lot of friction.
I know RarestRX got 140 rwhp with only bolt on stuff. You should make at least about 160 with your mods. Try pulling codes and stuff and just do a general tune up.

88IntegraLS

Your car looks awesome. Those white five stars go well with the medium blue metallic paint.

marcus219

Thank you sir, there not white though .. Bigger pic...

CANRX7GX

iTrader: (1)

i think i might have the solution to this... the timing was adanced with the rebuild so that might be a problem

rotary>piston im running 75W90 royal purple tranny and axle gear in both my tranny and axle ... changed a month ago and everything was good no leakage etc.. so i dont think it would be that

CANRX7GX

iTrader: (1)

or what pengarufoo said .... af ratio might be way off now.................

marcus219

It depends how much its advanced..a little bit wont hurt.... How much was it for that dyno time?

rotary>piston

you could get an S-AFC. It may solve your problem, and will give you more horses even if the car was running perfect.

CANRX7GX

iTrader: (1)

i paid for 2 baseline runs ... 50 bux ... canadian haha which is 20 usd haah j/k to have a wideand is like 100 bux .......

and yeah i was just thinking that same thing rotary>piston

such an overwhelming amount of replies... thanks for your input guys