1000cc+2 liters= idle issues?

[cturbo28]

Anyone running 1000cc injectors on a 2 liter? Just wanted to pick your brain on idle issues or I guess you could say lack of idle.

history..... previous injectors 740cc and car idled perfect with tune for 2 years. ( only changes are turbo, injectors, tune)......

E11v2 flying lead
1000cc inj.
GT3076 turbo
SR20DET
Cams 272 ext 264 int


CT

[jetgsr]

Gezzz they're big, I'm running 800's on a 2.3 was 2ltr but idled fine.

what sort of fuel pressure are you running?? Some of the big injectors at low pressures have bad spray patterns and the other problem can be the ECU may not have enf resolution to chop it back.

I had a pulsar with big injectors and the ECU resolution was either eg: 10 was not enf and 11 was too much
injectors were just too big for the job. But i would of thought the E11 would be able to control anything including a 5ltr bucket and a funnel

But You just might need those 1000 cc injectors with a 3076 and some serious boost.
wouldn't be another map interfearing with the main fuel map? cold start / zero throttle etc but it ran ok with 740's

I'm sure there are guys out there with similar setups. Rob Barac has some serious shit under the bonnet and it idles smooth as.

Probably haven't help sorry!

[cturbo28]

Any info is good info,

I am running 45-45 psi fuel pressure no change from the 740's, I am going to try and shut off the fuel correction maps today, ie coolant temp etc.. Also the prime map. It might be configured to the 740's and not the 1000's obviously.

one other thing is that I did not purchase the injectors so I do not know the amp for peak/hold, should that matter? in the "injector current set up" should I just chose the 5amp/1.2amp settings????

CT

[stevieturbo]

Any info is good info,


one other thing is that I did not purchase the injectors so I do not know the amp for peak/hold, should that matter? in the "injector current set up" should I just chose the 5amp/1.2amp settings????

CT

it most definately does matter.

1000cc injectors will more than likely be "peak and hold" type. If this is not set correctly, your injectors will be triggered completely wrongly. Ask whoever supplied the injectors, what current they are rated at.
But IMO ANY of the peak and hold settings will work better than the saturated setting. Try 3A/0.8A first, and re-tune.

[cturbo28]

Any info is good info,


one other thing is that I did not purchase the injectors so I do not know the amp for peak/hold, should that matter? in the "injector current set up" should I just chose the 5amp/1.2amp settings????

CT

it most definately does matter.

1000cc injectors will more than likely be "peak and hold" type. If this is not set correctly, your injectors will be triggered completely wrongly. Ask whoever supplied the injectors, what current they are rated at.
But IMO ANY of the peak and hold settings will work better than the saturated setting. Try 3A/0.8A first, and re-tune.

Thanks for the advice, I will try the setting you requested and let you know how it turns out. Also i did find out that the injectors are defiantly peak and hold.

[HaltechScott]

Measure the resistance of the inejctors with a multmeter ( ohms )

then Battery voltage (13) / ohms (X) = current draw. if the current draw is say 6 amp, set the software to 5 amp so the injectors can peak then hold, just like they are suppost to.

as for getting the car to idle. In the 2d fuel map press "I" this will let you change the incriment the up and down keys changes the injection time by.

[terry_b20]

Hey Guys

I am currently running RC Engineering 1000cc's injectors on a Pulsar Gtir and the car idles fine.
The base fuel pressure is 43psi , the injectors being used are peak and hold.
For more info you can e mail me and i could probably send you my map.

My E mail terry_b20@hotmail.com

[cturbo28]

Cool, email sent. I look forward to checking out your set up.

[Boosted_JDM]

I got a B18 motor (1.8 liter) 1000cc precision injectors, nooo problems, but i am using an AEM EMS. Should be fine with haltech.

[peterblais]

I am running 1000cc also on 2L vw 20v, 50psi base pressure- They idle fine on my e11 but holy lord are the prime / cold start / etc settings sensitive. You barely change anything and the thing either won't start or is fouling plugs. I think rather then go to 120lb next I will go 2 stages and use 630cc primaries.

What air / fuel are you guys getting these to idle at? Mine doesn't seem to want to really go much leaner then about 10.5:1 before it just up and stalls. I've got a big set of cams in it also (280) that tend to make it stall if the rpm's dip.

[turboglenn]

I'm running 1000cc injectors on an e6k (no adjustments to the injectors what so ever) I run E85 all summer and go back to pump gas with a different map in the winters (regualrly hits 0*F and below here)

I have them at 36psi base fuel pressure and at small idle openings on petrolium fuel they are real picky, but if you learn to set the "battery comp" and the closed looop "cycle between correction" correctly to your o2 sensor you can ge a great idle both day and night with or without accesories running.

ON e85 the idle opeing times are a tad larger and the idle becomes even easier to set.

The biggest issue with injectors that large and larger is that the 1% increments the closed loop changes at makes a BIG difference in teh amount of fuel delivered. As well as the differences in ms adjustment in the regular mpa, air temp and coolant maps (providing you utilize them you can get myuch better factory type idle from huge injectors)

[Mobne_s13]

I have 1600cc bosch motorsport injectors peak and hold. I have a nice idle at 800-1000rpm with my e8 ecu.

Fuelpressure 43psi/3bar with e85.
1.85l 16v engine.