Big injectors and idle quality
Thread Starter
On The Tree
Joined: Oct 2012
Posts: 198
Likes: 33
Big injectors and idle quality Hi guys, I understand some injectors have a straight/pencil stream and some have spray patterns that atomize the fuel better. I have a Holley standalone and a 1-1 fpr and running flex fuel sensor/e85 with my turbo setup, pretty standard stuff. Currently have Deka 80lb injectors, they idle just fine but I am out of fuel. I have 120lb FIC injectors which I believe atomize better and would get me to 700hpish. But what if I get some Bosch 210s like what VS Racing sells? I would be able to set my base fuel pressure lower to get the most out of my single Walbro "Hellcat" pump. But would I wreck my idle quality?
Second part of the question, what are your favorite big injectors? Am I missing an obvious go to injector?
Second part of the question, what are your favorite big injectors? Am I missing an obvious go to injector?
Thread Starter
On The Tree
Joined: Oct 2012
Posts: 198
Likes: 33
Hi guys, I understand some injectors have a straight/pencil stream and some have spray patterns that atomize the fuel better. I have a Holley standalone and a 1-1 fpr and running flex fuel sensor/e85 with my turbo setup, pretty standard stuff. Currently have Deka 80lb injectors, they idle just fine but I am out of fuel. I have 120lb FIC injectors which I believe atomize better and would get me to 700hpish. But what if I get some Bosch 210s like what VS Racing sells? I would be able to set my base fuel pressure lower to get the most out of my single Walbro "Hellcat" pump. But would I wreck my idle quality?
Second part of the question, what are your favorite big injectors? Am I missing an obvious go to injector?
Second part of the question, what are your favorite big injectors? Am I missing an obvious go to injector?
If you are looking for drivability, the ID injectors are the go-to - load in their published injector characteristics and a lot of things get cleared up.
I probably have 5 sets of injectors in my garage and I run the 1050 ID's for the drivability.
TECH Fanatic
Joined: Jan 2009
Posts: 1,063
Likes: 475
From: Bostwick, GA.
The Terminator has the inj end angle feature.
Take a look at that when tuning.
There's some discussion as to its accuracy in the calcs.
Here's a link to such.
Let me help you with Injector End Angle. - Holley Performance Products Forums
Take a look at that when tuning.
There's some discussion as to its accuracy in the calcs.
Here's a link to such.
Let me help you with Injector End Angle. - Holley Performance Products Forums
120s should net you 1000+ at 60psi base and 90% DC. 80’s should go 600++ if they are plumbed efficiently w 60+ base and good voltage. A lot of times the plumbing is poor, or the pump can’t handle pressure well. The in-tank walbro style are known for flowing poorly at higher pressures.
Be sure to look at your voltage above 6k or so too. Super common for OEM alternators (especially cheap auto store remans) to drop off around 6k. Then come back online at lower RPM. So if you don’t data log, many don’t know they have a huge voltage drop at high RPM.
210’s will idle e85 just as well as the 80’s in my experience. No reason not to go big and buy once IMO.
Be sure to look at your voltage above 6k or so too. Super common for OEM alternators (especially cheap auto store remans) to drop off around 6k. Then come back online at lower RPM. So if you don’t data log, many don’t know they have a huge voltage drop at high RPM.
210’s will idle e85 just as well as the 80’s in my experience. No reason not to go big and buy once IMO.
The Terminator has the inj end angle feature.
Take a look at that when tuning.
There's some discussion as to its accuracy in the calcs.
Here's a link to such.
Let me help you with Injector End Angle. - Holley Performance Products Forums
Take a look at that when tuning.
There's some discussion as to its accuracy in the calcs.
Here's a link to such.
Let me help you with Injector End Angle. - Holley Performance Products Forums
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