how far i can push the hx-35 with 680 injectors?

[GORBS88]

Mods are up to date in my profile, Just curious how far i can push the hx-35 with 680 injectors.????? I dont have a logger to monitor duty cycle but i have all the other gauges needed... Anyone have any experience with this turbo??? So far i am runnin 20psi and want to push it to 25 at the track....

 

[GVR4592]

How are you tuning without a datalogger?

 

[GORBS88]

How are you tuning without a datalogger?

Simple, there are more ways of tuning then logging..

#1, I am using E-Prom ecm with tuner pro, Which i can set my target A/F ratio. I also have a wideband which i monitor to make sure its accurate and it is..11.2 across the board.

#2, I have a knock box which displays timing and knock counts, so for my timing i play with it until i am happy with the knock.

The car is tuned well and pulls hard, but without a logger to monitor duty cycle im not to sure on the fuel im using. I am goin to invest in one soon but until then i was hoping someone could shed some light on this?

 

[pballer]

you need to know injector duty cycles

 

[chicagoavenger]

Honestly no one will be able to tell you since everyone's car is different. I mean they can give you a ballpark figure but what will that do for you? Why not borrow a logger for a quick second or just spend 60 bucks and get one?

 

[spyderturbo007]

Assuming you are shooting for a target AFR of 11:1 and an IDC of 100%, mathematically you can support 48.45 lbs/min of airflow. At 80% IDC, you can support 38.76 lbs/min provided you have a pump to support this airflow at your boost pressure. But, since you have a 1g, this doesn't do you very much good unless you know the maximum airflow of the turbo. You really should invest in a logger so you can monitor IPW and IDC.

 

[Maglin]

Some info. I had the HX35 and 1000cc injectors. At around 32 PSI and a 11.5:1 AFR I was seeing around 60% DC on my injectors. Being I had 1000cc injectors it would be maxing out 600cc injectors. Can't you see DC with the knock box? Never used one but I thought it did more than just show you knock.

spyderturbo007 is correct in his math. I was pushing around 400 HP. You can see you AFR. Setting your EPROM ECU for AFR targets doesn't really work all that well but I'm sure you know that already. Takes some tweaking to get it where you like. Turn up the boost and monitor your AFRs. If you see them going lean get out of it and add some more fuel. If they still go lean then you are maxing out either your fuel pump or your injectors. Likely your injectors as the 255 is good to around 500 HP as an estimate. But of course it's better to know what your fuel system is doing by using something to log them. Build a cable and use MMCD with the palm emulater on your laptop. Not the easiest way but it is functional. I've done it that way when my palms die.

 

[tt281gt]

#2, I have a knock box which displays timing and knock counts, so for my timing i play with it until i am happy with the knock.

Do you have The Knock Box http://www.theknockbox.com.au/ or somethign similar? What is the price on those puppies I've been looking into those.

 

[Larry L]

Im running an HX-35 on PTE 680's inj, 255lpm pump @ 22psi on pump all day.

 

[WillWrk4Boost]

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