My HP goal is 300rwhp for my s5 tii. How obtainable is this? and about what will it cost if done RIGHT.

You need a turbo upgrade, and fuel to support extra boost. However you go about it will determine cost.

I agree with Ronin. It is not going to happen on stock turbo. But a stage 1 hybrid will just make it.



Cheep way or right way is up to you.

im all for doing it the right way the first time. it saves you money in the long run. I wanna keep it at 10psi. what does a stage 1 hybrid consists of.

http://bnrturbos.com/2ndGen.htm Pick one thats good for what you wanna do. I would go with a stage 2, more flexible. Incase you want a little more power in the future.



The best way to do fuel is an EMS, that way you have a good foundation for your engine, and future projects if you decide to go further.



300hp is real nice, but power is addictive.

But as you increase power you decrease gasmillage. 300RW is a respectable amount to me. Its enough to give you a rush when wanted and is still useable on a daily basis. Dont get me wrong id love to have a 400-600 hp beast but i think its a little over kill on power for a car thats driven around with traffic and stuff. How often do you get to use that much power. Also i want to make it reliable, which doesnt come cheap. So to money constrants too. its going to be a problem.



Right now the only mod i have is a intake and a mild street port. im guessing im sitting at around 220-230 and maybe 210 or so RWHP.

HA..

You are probably arouns 220 FWHP

FWHP? front wheel hp? what sort of RX-7 are you driving?



edit: oh, i get it, flywheel hp... nevermind, dumb day

yea, i wouldn't use the term FWHP when referring to CRANK horsepower... might confuse people considering thats how you rate Front Wheel drive cars, lol...



Either way, I think I saw you say you'd like to keep it at 10psi... 300whp using 10psi wont happen, unless not under conditions of keeping a car streetable. To obtain 300whp at 10psi, you'd need a LARGE port, IE: large j-bridge or p-port... neither are great on gas or great in traffic.



300whp will take a larger turbo, EMS tuning, supporting fuel and ignition mods...and a good port job (street port would do). The rest will really come in with tuning... you will probably land closer to 14psi than 10, but it'll be ok....



An option you may want is go w/ a standalone EMS w/ different maps, then run a normal street-tuned map for daily driving, then simply switch maps to a track-tuned one if you want more power. Most good boost controllers can also switch between "high" and "low" boost settings quickly.

im scared of over boosting and blowing something. Thats why i wanna keep it at like 10psi. I want to be able to drive daily on 300rwhp not have it turn on and off. This is a work in progress so its not required to all be done at once. I was going with a VMIC as the first upgrade and some pullies and stuff. Then upgrade the turbo.

OOOK, but 10psi wont net 300whp...

im new to the turbo rotary thing. It was a N/A prior to engine swap. how high can you safly boost?

Keep it stock boost on the stock fuel system.

yea, i agree with ronin, keep it stock til u know the car a bit better. Was the chassis N/A before the swap, or is it a 6 port N/A block with a turbo slapped on the side?

5psi 10psi 25psi dont make a damn. Tune it and build it right. Porting is over rated in my opinion well over 550whp can be had on stock ports.



10psi will net 300whp on stock ports with a gt35R :-)

I run 10psi with a stock turbo ECU. No emmisions, and a cone air filter.



the wastegate is ported though.

FC Rotorhead, have you done anything to the fuel system? the increased flow and boost must be begging for some more fuel or bigger secondaries, since the stockers start out at damn close to 60% duty cycle

man sorry for the REAL late reply...



I have nothing done to the fuel system. Its completely stock.

But I know it runs richer than hell because I only get like 250km per tank....... and I always smell like gas everytime I get out of my car. haha but yes, I agree with you, I may need bigger secondaries to be on the safe side.



A standalone will be something i will be looking at really soon.

its not runing rich I can promise you that. 10psi is maxing out the stock fuel system. You realy should put an FD pump in there at least.

I've netted 330rwhp at only 11psi and vosko has seen that.



All I had was

S5 stock engine,

to4 turbo

greddy fm IC

Haltech e6k at the time

720/1600 injectors





A friend that had my old hybrid netted 308 rwhp with similar mods.

hmmm iceblue, well im not gonna argue... I agree.



what would be an ideal fuel system upgrade running 10 psi? My goal is somewhere close to 300hp too, but not too soon here. However, i wouldnt want to blow my motor anytime soon either :P Sorry for the jack cryptic.

I agree. It might be running rich at idle and low load/low rpm conditions, but when you're at WOT, it's bound to be going lean.

I would get a Walbro instead of an FD pump. Is probably cheaper and can outflow more at higher PSI.

larger secondary injectors (680 or 720) and an fd or walbro fuel pump. plenty of fuel

Thanks guys!

FC RotorHead You can do it on flow tested stock injectors with a FPR and walboro or FD pump. If you are going to do the fuel mods no need to cut it short. As j9fd3s said some larger injectors will do it.

well... i dont have a standalone to manage all that fuel system..... so im stuck here for now... I posted a separate thread so i didnt jack crypts.. please look at this.



https://www.nopistons.com/forums/ind...howtopic=63413



any input is appreaciated!

where can i find 720cc injectors can only get them if made custom and does any one have an opinion of the 750 injectors also will they be compatible with the rtek 2.0 website says its preprogramed for 720s. will it still work with the 750s? also is the rtek2.0 a good management computer? or are there better out there for around the same cost? i am also probly looking to be pushin more hp then 300 with the expense of a hybrid turbo and large ports.

why is there no edit button? any way for those who think im a retard for talking about an s5 and rtek im srry i own an s4 and just kinda jumped in to this topic because im looking for similar results with a similar setup



why now is there an edit button?