Yeah! New rtek 1.7 chip now available
#126
I know this is all for stock stuff so I have no worries, I know I'm going to have to put it on a dyno and tune it. What my main question is, is what is the a/f #'s with the rtek 1.7 chip because that will tell me if I have headroom with my slightly larger turbo to at least get it to the dyno withought blowing up my engine If the 1.7 is tuned with the stock turbo at some liberal a/f #'s then I won't have to worry but if it is tuned just perfect for the stock then I don't want to take the risk of driving it to a dyno and blowing the engine on the way (25mile drive). I guess I wasn't asking the question right.
#127
You know what would rock? If the creator of this chip came up with a program that lets him enter the turbo, injectors, ect being used and it burns a chip that will control the car for those mods. Custom made ECU's basically. Then we would send in our mods, and he would type them into his program and the thing would burn a chip that would work perfectly with that setup...now that would rock.
-Joe
-Joe
#128
Rotary Enthusiast
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Originally Posted by hondahater
I know this is all for stock stuff so I have no worries, I know I'm going to have to put it on a dyno and tune it. What my main question is, is what is the a/f #'s with the rtek 1.7 chip because that will tell me if I have headroom with my slightly larger turbo to at least get it to the dyno withought blowing up my engine If the 1.7 is tuned with the stock turbo at some liberal a/f #'s then I won't have to worry but if it is tuned just perfect for the stock then I don't want to take the risk of driving it to a dyno and blowing the engine on the way (25mile drive). I guess I wasn't asking the question right.
You know what would rock? If the creator of this chip came up with a program that lets him enter the turbo, injectors, ect being used and it burns a chip that will control the car for those mods. Custom made ECU's basically. Then we would send in our mods, and he would type them into his program and the thing would burn a chip that would work perfectly with that setup...now that would rock.
Though Version 2 will somewhat bridge this gap as it will give you the power to make a "custom ecu chip" yourself.
#132
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Originally Posted by turbo2ltr
I posted this earlier in this thread. I don't understand what I'm not explaining to you guys. Just think of the Rtek7 as a stock ECU that came from the factory to handle 12 PSI on the stock turbo. Just like the real stock ECU, if you push it beyond it's capabilities, you will need to take measures to assure that you motor is running correctly.
Questions like "Can I run a mac truck turbo", "Can I run 2000cc primaries", and "can I run 28 psi" are all moot. You know the answer to them because it's the same answer as if you were to ask about the stock ECU. And that is "You need to do what is needed to make sure that you have enough fuel for the amount of boost you are running or enough fuel control to compensate for injectors that the ECU is not expecting."
jon88se has an excellent point in starting out with as little boost as possible, and it's always good to run race gas when you are tuning on a dyno to give you a little extra headroom in case a bad correction is made.
--Mike
www.digitaltuning.com
Questions like "Can I run a mac truck turbo", "Can I run 2000cc primaries", and "can I run 28 psi" are all moot. You know the answer to them because it's the same answer as if you were to ask about the stock ECU. And that is "You need to do what is needed to make sure that you have enough fuel for the amount of boost you are running or enough fuel control to compensate for injectors that the ECU is not expecting."
jon88se has an excellent point in starting out with as little boost as possible, and it's always good to run race gas when you are tuning on a dyno to give you a little extra headroom in case a bad correction is made.
--Mike
www.digitaltuning.com
I know a few people that liek to run a grade LOWER in fuel for dyno tuning and start off low with boost and timing advance. They tune for say 89 octane and get the car running nicely (not too aggressive). Then run their normal pump gas (say 93 octane) all for an added margin of error. I've gotten a couple bad tanks of gas iin my GVR4 and my logger reads a bit of knock. I actually know what gas stations to stay away from that way hehe
#133
Rotary Enthusiast
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Originally Posted by jon88se
I know a few people that liek to run a grade LOWER in fuel for dyno tuning and start off low with boost and timing advance. They tune for say 89 octane and get the car running nicely (not too aggressive). Then run their normal pump gas (say 93 octane) all for an added margin of error. I've gotten a couple bad tanks of gas iin my GVR4 and my logger reads a bit of knock. I actually know what gas stations to stay away from that way hehe
But whatever works for people.
#135
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Originally Posted by turbo2ltr
IMO, thats nuts. While I understand their thinking (I guess tuning using knock instead of A/F?), running on the dyno is a lot harder on a motor than running on the street. I'd want to tune for proper A/F while using race gas so if I go too lean, there is a buffer. I'm not saying tune *for using* race gas, but tune *with* race gas. It doesn't take much knock to destroy a motor. These cars have crap knock sensors anyway. You might be able to tune leaner with race gas, but the point is to tune the A/F for numbers that are pump gas friendly, while running race gas for protection while on the dyno..
But whatever works for people.
But whatever works for people.
#136
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just one more thing about turbo size
I was wondering what if a 20 g would be too big as well, but so I don't ask his question ever again; what housing and wheel sizes would be too big?
thanks
thanks
#137
Originally Posted by TO4Z
I was wondering what if a 20 g would be too big as well, but so I don't ask his question ever again; what housing and wheel sizes would be too big?
thanks
thanks
There are a few FC's that run the 20G, I think greddy used that mitsu turbo in one of the older greddy turbo kits many years ago. The 20g has the potential to put down some big power. (350rwhp plus)
To fully utilize the 20g, or a variety of aftermarket turbo's you will need much more fuel than the stock fuel system offers. You might be able to get by with 4 720cc injectors, but it's more likely that you might need a combo that offers even more fuel.
The rtek ecu isn't a magic chip, this has already been stated. The v1.7 has the ability to run 720cc secondaries like stock. It has lowered the secondary activation point, and retards timing past fuel cut. Stock primary injectors and 720cc secondary injectors is not enough fuel to support nearly all large aftermarket turbo's at anything other than very minimal boost.
Matt
#139
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Originally Posted by 88t2romad
will this make my 88t2 go.....brap....brap....brap....brap.....like a bridge port?
Im kidding!!..........geeze some poeple on this forum.......!!!!!!!???!?!?!?
Im kidding!!..........geeze some poeple on this forum.......!!!!!!!???!?!?!?
#140
Stock primary injectors and 720cc secondary injectors is not enough fuel to support nearly all large aftermarket turbo's at anything other than very minimal boost
are you saying this with the stock fuel map of the rtek or are you saying this period??? 720's are large enough to run a bnr stage 2 and almost the stage 3.
are you saying this with the stock fuel map of the rtek or are you saying this period??? 720's are large enough to run a bnr stage 2 and almost the stage 3.
#141
Originally Posted by hondahater
Stock primary injectors and 720cc secondary injectors is not enough fuel to support nearly all large aftermarket turbo's at anything other than very minimal boost
are you saying this with the stock fuel map of the rtek or are you saying this period??? 720's are large enough to run a bnr stage 2 and almost the stage 3.
are you saying this with the stock fuel map of the rtek or are you saying this period??? 720's are large enough to run a bnr stage 2 and almost the stage 3.
#142
how do you get that??? the stock injectors are good for about 250hp so the 720cc secondaries should get you to at least 300rwhp. Remember you have to change your fuel pump way before you change your injectors. You can run the stock turbo boosted to as high as 10 to 14psi with stock injectors just fine.
#144
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Originally Posted by gsracer
I'm not sure what you aren't understanding. The size of the turbo doesn't matter, it's the airflow that does. You could run a 60-1 turbo on a stock ecu/fuel system if you keep the boost at rediculously low numbers.
There are a few FC's that run the 20G, I think greddy used that mitsu turbo in one of the older greddy turbo kits many years ago. The 20g has the potential to put down some big power. (350rwhp plus)
To fully utilize the 20g, or a variety of aftermarket turbo's you will need much more fuel than the stock fuel system offers. You might be able to get by with 4 720cc injectors, but it's more likely that you might need a combo that offers even more fuel.
The rtek ecu isn't a magic chip, this has already been stated. The v1.7 has the ability to run 720cc secondaries like stock. It has lowered the secondary activation point, and retards timing past fuel cut. Stock primary injectors and 720cc secondary injectors is not enough fuel to support nearly all large aftermarket turbo's at anything other than very minimal boost.
Matt
There are a few FC's that run the 20G, I think greddy used that mitsu turbo in one of the older greddy turbo kits many years ago. The 20g has the potential to put down some big power. (350rwhp plus)
To fully utilize the 20g, or a variety of aftermarket turbo's you will need much more fuel than the stock fuel system offers. You might be able to get by with 4 720cc injectors, but it's more likely that you might need a combo that offers even more fuel.
The rtek ecu isn't a magic chip, this has already been stated. The v1.7 has the ability to run 720cc secondaries like stock. It has lowered the secondary activation point, and retards timing past fuel cut. Stock primary injectors and 720cc secondary injectors is not enough fuel to support nearly all large aftermarket turbo's at anything other than very minimal boost.
Matt
I know it wasn't a "magic chip" I just was wondering what turbo would be creating too much air flow for it that's all, but thanks for your reply none the less.
#147
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I just quickly want to chime in here... and say, fritz ... once you go ahead and upgrade to a turbocharged model. And actually modify it... shut the **** up.
The 550cc injectors will product 300rwhp with some type of controller.
with 720 secondaries you will have no problems making over 300whp.
The 550cc injectors will product 300rwhp with some type of controller.
with 720 secondaries you will have no problems making over 300whp.
#149
Mechanical Engineering
Originally Posted by hondahater
hum thats strange, if you do the fuel calculator on the rx7.com website it shows the 550/720 combo only doing 290 to about maybe 300.
PS
if i bought and rtek 1.5 this would eliminate my need for an FCD and AFC?