s4 ecu on a safc with an s5 engine

open intake open exhaust
wired vdi and no 5/6 port sleeves
no emmissions
and thats it,
110k on engine

it didnt even try to over heat, it sat at 180 the whole time and even dropped to 165 between the 15 runs (1 minute break) freaking outstanding huh?


(taken right before the repaint)

 

not bad man

 

nice

 

so 13.7 is the lucky AFR...

and with your power curve mine is the same way, I can feel the power drop off around 7600 rpm

 

So if this guy is getting that kind of hp to the wheels with nearly stock what should I be getting if I actually got my car dyno tuned on an safc ?

I have a streetported s4 na (rotaryresurrection), with full exhaust , rb headers and borla catback, straight pipe no cat, kn intake w/bonez maf adapter, corksport intake kit w/heatwrap on it, completely removed 5/6 ports and sleeves, and ported throttlebody.

I figure i have abotu 160-170whp now without being tuned, but after being tuned im guessing i should have 175+whp .

Im guessing my power would dropoff around 7500 rpm ? Thats the highest I'll rev it up to , I havent went higher, I believe it will go to 8000 but I see no point in going that high.

Although I know on s5 you can rev to 8600 but with the s4 it probably wont.

 

^ I put down 172 with very similar mods as you and a tuned SAFC. I'd say you'll get between 170 and 180. It's hard to do better than that with s4 manifold and rotors.

 

Man, gotta love that dyno graph, what a beautiful engine

 

Do you have your 5/6 ports and sleeves removed ?

 

No. I have the Pineapple Racing inserts operated by an electric air pump

 

Oh ok, I run with no 5/6 ports at all...I was thinking of oneday putting the 5/6 ports back in and seeing how much of a difference it makes on low end, but I am skeptical about those pineapple inserts because I'm afraid of them coming loose.

My car definitely makes good power after 3500-4000rpm , but before that it definitely is losing power from having the 5/6 ports taken out.

Do you think i should put the 5/6 ports back in ?

 

The short answer is that the more your car is tuned for top end (porting etc) the more likely you'll notice a difference in low end from properly working auxilary ports. I like the 6 port system from a driveability standpoint. It's not going to make a whole lot of difference in performance driving--who stays under 4000 rpm in a nonturbo anyway?

I'll say this: My car is annoying to drive with the auxilary ports wired open, which they were for a while. This is close to having the sleeves removed. I had to downshift all the time for any kind of acceleration on the highway or going up hills around town. I noticed a big difference in low end--but you see, my car is ported and has a header. I've talked to other people on stock ports who say that it wasn't a big deal.

 

yo i got an s4 wit intake, rb headers,2.5" straight pipe and apexi n1 muffler..how much do you ppl think im making (whp)..

 

My car is ported as well, its ported by rotaryresurrection.com aka Kevin Landers and a full headerback exhaust with straight pipe and no cat.

From what I read I wont be making much more power on the topend (maybe 1 or 2 hp this is a guess with no proof), but I'm losing well over 10 hp below 4000 rpm this is easily proovable.

So if I'm really only making another 2 hp on topend and thats it, I dont think its really worth losing all that power on the low end.

Ive had others tell me that you will gain another 5-10 hp from taking them out, but again there is no proof behind this.

Although my car does pull very nice from 4000 and all the way into the redline to 7500rpm , Ive never driven it with working 5/6 ports so I have nothing to compare it to.

 

Id say about 150 hp at the wheels , 175-180 hp at the flywheel.

 

I feel like i have to say this also do you know what i might be making I still have the stock exhaust manifold but i'm going to get a pipe made that goes down into a silencer and goes back to a dyno max exhaust I have the whole dynomax system from summitracing.com. I have clean injectors i cleaned out all the carbon in the intake when i put it back in and that is about it oh and wait a K&N filter for the stock housing.

 

how is dreyko running his s5 motor with the s4 ecu? my s5 motor is rigged up to an s5 ecu to run right. oh btw, since we are all debating horsepower numbers here, my fc has an s5 motor, safc II, header, no cats, no aircon/powersteering/fan and k&n cone airfilter. what you ya'll think i'm putting down to the ground? i've never dyno'd my car before (obviously)

 

Revving your S4 or S5 past 8,000 on a regular basis is a very bad idea without oil pressure/regulator mods, and race bearings. Within the SCCA circuit, most racers don't go past 8,300 with the mods stated above.

This is a classic reminder that sometimes people can give advice on this forum that can be very helpful and sometimes very detrimental . We need to take everything said here with a grain of salt. Be very careful and don't believe everything you read.

Brian

 

T H A N K Y O U ! ! ! i can't stress this enough. motors have blown because of people listening to some **** on this forum! keeps us in business tho i guess.

 

ditto

 

Yall 3 blow up your motors tryin to rev past 8000 already ? I know enough not to rev past 8000rpm , my point stated was the motor CAN do it. Sure you shouldnt be doing it but the point is it can do it stock if it wanted to , or you can bring up the reliability by doing the supporting mods you said. You also may want to race clearance your rotors as well, along with the port to support the power at the higher rpms effiecently and properly tuned on safc with the right fuel system NONE of you mentioned.

I thought you all knew so much ?

 

relax.


Nice numbers for an N/A......what gear was the pull done in?

 

damn, nice dino
looks like its time for an safc