boost_its_what_for_dinner

im rebuilding and have the 1.7 and 255 pump,3" exhaust. i was wonder what is the safe boost to run.12psi i hope. its going to be a landers rebuild with streetport. i only want 300-350 ponies so hopefully and this is a road driven car, so i dont want a standalone unless i have to have one. i also have other mods like fmic,koyo etc..

turbo2ltr

iTrader: (1)

I'm thinking you'll need something more than just the 1.7 to support a streetport at 12psi. An AFC at the minimum, Rtek stage 2 preferred.

boost_its_what_for_dinner

can you explain that response to why? and why cant 720cc secondaries cover 12psi.

turbo2ltr

iTrader: (1)

I didn't say 720s wouldn't work, I said you'd need something more than just the 1.7 as far as fuel control goes. Streetports change the VE of the motor significantly enough that you are going to need something to adjust fuel with.

Maybe someone else can chime in here, but I doubt you'll make 300-350 on 550/720s. It's just not enough fuel, especially with the 1.7 leaning things out.

icecreaman

550/720 will get you around 330whp ish... but you need adjustablility to do that. That is why you go Rtek7 2.0

edomund

I know it's been said for years on this forum, but it really is important to SEARCH before asking questions. It will allow you to ask an intelligent and informed question. This question is seriously asked once a week. Here it goes one more time.

It wont work. You can't just through a streetported motor in and run 12PSI with only upgraded secondaries. There are LOTS of reasons why it wont work, fuel is only the 1st reason why.

There are lots of factors that go into tuning it not a simple equation like 12PSI = 720cc injectors. 1st everyones street port is a bit different "streetport" is a generic term meaning inbetween stock ports and a bridgeport. Any time you begin to add different upgraded parts into your tuning equation ie. turbo, streetport, etc. you need adjustablity in your EMS to compensate. As turbo2ltr said streetports change the VE turbos also change the tuning dynamic significantly. A BNR TO4 B like I have flows much more air at say for example 10PSI than the stock turbo flows at 10PSI. Thats the whole point of a larger compressor wheel.

READ more ask less.

ed

boost_its_what_for_dinner

you know for the time you wasted typing all that you could have just typed um no man it wont be safe to run that set up here is what you will need to have a a safe setup... blah and blah
instead you go on and on about searching... this section has about as much movment and a snakes digestive system and thats slow. i figured i would save time by just asking a SIMPLE question and see the results but nope thats just to hardfor you big wigs to do. so now my rebutle is how much psi is safe with my current set up and stock turbo for now ( this is with a streetported motor from kevin landers) and all i need is a simple answer of such and such psi not a load of crap

so heres an example of a required answer... 10 psi or 8 psi and etc...

thx

boost_its_what_for_dinner

you know for the time you wasted typing all that you could have just typed um no man it wont be safe to run that set up here is what you will need to have a a safe setup... blah and blah
instead you go on and on about searching... this section has about as much movment and a snakes digestive system and thats slow. i figured i would save time by just asking a SIMPLE question and see the results but nope thats just to hardfor you big wigs to do. so now my rebutle is how much psi is safe with my current set up and stock turbo for now ( this is with a streetported motor from kevin landers) and all i need is a simple answer of such and such psi not a load of crap

so heres an example of a required answer... 10 psi or 8 psi and etc...

thx

The Wankler

iTrader: (14)

I thought Edomund gave some good info above.

boost_its_what_for_dinner

yes its good advice if i asked for all that but i just ask whats a safe boost number ? thats it and i just said i hope its 12 psi but if not ohwell i will run whats safe. this forum is here to ask questions and have more exp. guys help out us less exp. guys. if thats to hard then dont post

edomund

Well since I am one of the main contributors (and one of the only people running a BNR/Streetport setup on a Rtek) of this forum & you obviously don't value my opinion from your smart *** post I will not offer you any more help.

I will tell you there is no simple answer and you will learn a hell of a lot more reading then typing. But hey, good luck tuning that setup.

boost_its_what_for_dinner

look dude why dont you just fill me in on what i need to do with my rtek and get this over with

junk it and go standalone or afc and wideband?

turbo2ltr

iTrader: (1)

You ask for an explanation (post 3) and then you get mad when people take the time out of their day to give it to you....and one of the is one of the people (if the only person) on the board that has a similar setup as you are asking about. Instead of learning from the valuable knowledge he has gained from experience running the setup you ask about, you get mad that he didnt answer "x psi". You aren't going to get very far around here with that attitude. You want things to be simple, and they aren't. If you aren't willing to learn and just want answers without knowing why, then bring your car to a shop, sign a blank check and tell them you want 350 HP. I'm sure they will be glad to take your money.

You cant just put a number out there like "12psi". A safe PSI level is one that your wideband indicates that you are not running lean. Whether you go standalone or stay with some form of the Rtek, you are going to need a wideband.

We only say the 1.7 is safe at 12 PSI with a stock turbo, motor, and a 255 FP. You go putting bigger turbos on, getting streetports,etc, all bets are off, you're on your own to tune with your wideband or bring it to someone that knows how to tune. Since you can't adjust an Rtek 1.7, you are pretty much limited on what boost you can run.

The Wankler

iTrader: (14)

I have almost a identicle setup as Edomund. I have a Hybrid T04/Streetport w/Rtek. That is why his words ring true.

boost_its_what_for_dinner

well do you have the 1.7 or ? and what is your fuel set up like? how difficult was tuning and with whatdid you tune with

boost_its_what_for_dinner

and turbo2ltr theres has to be a certain psi that ican run till i get tuned hell i have to break the motor in still. why is it so hard to say just run stock turbo till you can get tuned properly, thats all i askd, i know getting streetport and bigger turbo is going to take tuning but i dont need peeps tell me that i just wanted ,sorry for being tempermental but im going thru alot and just like answers not equations

i am sorry for being an *******
but im impatient

icecreaman

with a stock turbo, your ecu is already set up to handle stock boost, actually the stock ecu will do quite well until about 9ish psi.
An Rtek7 1.7 will provide you with FCD, AWS removal, allow larger injectors, increase fuel pump, and get you to run 12psi safe. If you stay this way you should be safe. If you plan on changing anything else other than that, you need to go to 2.0, but why not go to 2.0 anyway?
Now im not sure what the streetport is going to do to the equation, with more displacment you will have more air so make you lean if all else is stock for the most part, so i still recommned the 2.0
without a WB i wouldn't go over 10psi. that is my answer
with a WB and the Rtek 2.0 you can go higher, but there is a current issue with timing right now so until they get you the 2.1 you wont wanna go realy past 12psi

boost_its_what_for_dinner

thx so ill get a wideband (i have a narrow band to keep an eye on it now) well im pretty sure my fuel set up will hold up with my 255 walboro and new 550/720s. any sugestions on a good wideband thats not aem.

icecreaman

nope, i use AEM uego. ide buy one for every car i own if i could

boost_its_what_for_dinner

ok i guess ill look into the aem

gxl90rx7

iTrader: (1)

aem uego only reads down to 10 a/f, but i havent had any problems with mine

turbo2ltr

iTrader: (1)

Partial list of WBo2

http://www.pocketlogger.com/forum/viewtopic.php?t=330

boost_its_what_for_dinner

so heres another question will putting the stage 3 bnr turbo on my stock port motor will that require a lot of tuning?

icecreaman

shouldn't be alot, but quite a bit. A bigger turbo moves more air at the same psi as say your stock turbo. So if you swap in a bigger turbo running same psi as stock, you will need to adjust fuel as you now have more air going in your motor

boost_its_what_for_dinner

so why wont the afm adjust the fuel, if the afm senses more air it will adjust to compensate.. am i wrong?