So what horsepower level are people needing to upgrade the injectors/pump?

[Supermassive]

That one I dont know, Im pretty sure my kit comes with an upgraded fuel pump but I wont be 100% sure til its delivered. Its one of those things that I feel is better to have for peace of mind, regardless of the need. Sorry I couldnt give a better answer, I would PM one of the turbo kit builders on here and see if they might be able to better clarify this stuff for you.

[seven]

Well I figure I'll buy the AVO kit, run it on the tune they supply... and over a weekend do injectors/pump and boost controller, then dyno tune it on E85... make some decent power with it.

[Exhaust]

If im reading this correctly I would need new injectors at 200-240whp? Why? And what would you guys think would be a comfortable size?

[Tansey86]

Originally Posted by Exhaust

If im reading this correctly I would need new injectors at 200-240whp? Why? And what would you guys think would be a comfortable size?

If you are running pump gas, as AVO stated you will be running 90% duty cycle at 280rwhp. If you don't plan to exceed that hp rating you are fine with stock injectors. If you want to go past that Id use this formula to calculate what exactly you need.
Injector size = (HP x BSFC) / (number in injectors x duty cycle)

Or you can ask a tuner on here like Visconti who has extensive fuel system R&D done on this car.
**Note: You will need to compensate for about 30% more fuel at a given rwhp rating if using e85.

[Exhaust]

Originally Posted by Tansey86

If you are running pump gas, as AVO stated you will be running 90% duty cycle at 280rwhp. If you don't plan to exceed that hp rating you are fine with stock injectors. If you want to go past that Id use this formula to calculate what exactly you need.
Injector size = (HP x BSFC) / (number in injectors x duty cycle)

Or you can ask a tuner on here like Visconti who has extensive fuel system R&D done on this car.
**Note: You will need to compensate for about 30% more fuel at a given rwhp rating if using e85.

Thanks for the heads up, whats BSFC if you dont mind me asking?

[Tansey86]

Originally Posted by Exhaust

Thanks for the heads up, whats BSFC if you dont mind me asking?

Brake specific fuel consumption

[PERRIN_Jeff]

Originally Posted by seven

So ok, to be more specific...

- this is the forced induction forum - So assumed forced induction
- I ask because companies like AVO are making 230-250whp on stock injectors and while I like their kit, I know I will want more power shortly after... I'd like to know when I'd need to plan for injectors, so I can budget for the upgrades to happen all together and not have issues.

Thanks guys

I think that it all depends on the HP you are shooting for or the boost you want to run. At this point we see no need for bigger injectors running 10psi at 7500 RPM. I am seeing plenty of fuel in the car. I think that most tuners are going straight for the injectors for a few reasons. One is, it's easy to add fuel without pushing the ECU to do more just dropping in some injectors.

I have been messing with this ECU for a long time, tweaking maps that may or may not do anything just to see what happens. All I can say is that I am not seeing a need for bigger injectors running the Vortech SC kit in both stock form (tuner kit) and even an upgraded form we will be offering. That means a pretty decent savings in $$$!

[seven]

Originally Posted by PERRIN_Jeff

I think that it all depends on the HP you are shooting for or the boost you want to run. At this point we see no need for bigger injectors running 10psi at 7500 RPM. I am seeing plenty of fuel in the car. I think that most tuners are going straight for the injectors for a few reasons. One is, it's easy to add fuel without pushing the ECU to do more just dropping in some injectors.

I have been messing with this ECU for a long time, tweaking maps that may or may not do anything just to see what happens. All I can say is that I am not seeing a need for bigger injectors running the Vortech SC kit in both stock form (tuner kit) and even an upgraded form we will be offering. That means a pretty decent savings in $$$!

In short, I won't need any more than 400whp and the turbo on the car (AVO kit) will likely not make that much anyway (maybe 400whp but definitely no more, will likely be pushing hot air by then). Realistically I'll be making 350-370whp MAX, but I'd like a cushion of course.

Please note this is likely to be on E85 and as a result the injectors will need to be larger to make that power level than on 93.

[ravenblackfrs]

If the stock rhp is 167.... I'd like to be about 250+ rhp. I cant imagine pushing 400+ rhp from this car. I can get mine sideways with the car running stock. At some point its not even fun to drive anymore. Problem I had with my stock X Runner, when the road was wet, I couldnt keep the ass end from sliding. Sucked having to granny it cause the ass end kept sliding when I didnt want it to.

[FA20Club.com]

Youll get close to 300whp so the 280whp mark is a good point to stock at without pushing the duty cycle too far

[gmookher]

Originally Posted by PERRIN_Jeff

I think that it all depends on the HP you are shooting for or the boost you want to run. At this point we see no need for bigger injectors running 10psi at 7500 RPM. I am seeing plenty of fuel in the car. I think that most tuners are going straight for the injectors for a few reasons. One is, it's easy to add fuel without pushing the ECU to do more just dropping in some injectors.

I have been messing with this ECU for a long time, tweaking maps that may or may not do anything just to see what happens. All I can say is that I am not seeing a need for bigger injectors running the Vortech SC kit in both stock form (tuner kit) and even an upgraded form we will be offering. That means a pretty decent savings in $$$!

so 9psi becomes a safe target for OE motor and injection, cool