injector help.
Thread Starter
Staging Lane
Joined: Dec 2015
Posts: 56
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From: Killadelphia
injector help. I have 2 bad injectors on my car right now so I am going to be replacing the entire set obviously. Currently the car has a dynotune from pcmforless for the stock 24lber's with a cc503 cam lt's etc. Anyway I wanted to know if I can get away with running 30lb injectors on said dynotune for a little bit till I have SOLOMON do the email tune. Or should I just get 24lbers again. I plan on getting ported and polished heads in the near future. Oh along with the injectors swap I will be putting on my 58mm tb that I have laying around too when I put the new injectors on. Also will be putting on my ported MAF too. Like I said I will be retuning within the next month via solomon, as I really do not like the dynotune PCM4> did on it. All help appreciated, thanks guys
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From: Maricopa, AZ
No, you'll need to tune with the new MAF (I wouldn't recommend using it ever), you'll need a new tune for the 58mm TB (especially if auto), and you'll need a new tune for the injectors (that's a 25% increase in fuel flow, the PCM can only remove 18% and that doesn't mean it will, also need to account for injector voltage offset).
I'd do everything (not the MAF, ever) at once with the head swap. It'd be cheaper to have your current injectors sent off and cleaned/refurbished.
I'd do everything (not the MAF, ever) at once with the head swap. It'd be cheaper to have your current injectors sent off and cleaned/refurbished.
Thread Starter
Staging Lane
Joined: Dec 2015
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From: Killadelphia
CANT AFFORD THE DOWNTIME..... I can get new 24lbs for 164$ And I am a M6. The new maf I know to stick on at time of tuning. As for the 58mm tb i've had it so I'm throwing it on when I do the injectors. So I couldnt run a month on 30lb's?
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From: Maricopa, AZ
The injectors will not do well without also changing at least the flow rate constant in the tune from 24 to 30. It will run very poorly and rich and it is well outside of the range for the stock PCM to trim out. You'll also want to adjust your injector voltage offsets, but that's not going to effect the engine nearly as much as the flow rate will. The injector voltage offsets will effect the engine, noticeably depending on how much different they are from what is installed right now, but not as much.
Can you buy just the 2 you need? That's better in a pinch than putting 30lb injectors on a tune for 24lb injectors.
What are the two injectors doing? Is it an electrical fault? Are they clicking? Or are they not flowing anything? You could try cleaning them out your self instead while you wait for the new injectors and tune. That would be the cheapest way if the solenoid is still clicking away. If they are not clicking, did you swap them with working ones to make sure it's the injector and not a bad connector? If the injectors are not clicking, I'd say buy only two and swap those until you get the tune and 30lb injectors in.
Thread Starter
Staging Lane
Joined: Dec 2015
Posts: 56
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From: Killadelphia
not clicking at all. bad fuel was ran through them that was sitting for 5yrs the previous owner told me and just killed em i am assuming i hook up a random set of ev1 injectors and they click away. cy 6 doesnt click cly 2 doesnt either... i sure i have others nothing pumping either lol.... Just installed a new 340lph fuel pump and fuel filter also, its getting fuel, and spark also as I swapped the opti 4times before i got one that actually worked, put a new ICM in and coil to, as I originally thought the problem was opti relate and just swaped everything on my ignition system, come to find out its just bad injectors and I could of saved myself a pretty penny and frustration. Guess I will just pick up a set of 24lb injectors and throw them in. there ev1 w/ the 4hole spray pattern. new from tre or some ish. after this if the car doesnt run im burning it to the ground. btw what lb injector u running with the 414rhwp?
sorry the 24lb injectors claim to be 250cc which I would think is 25lb injectors... I dunno but I went ahead and just got the 24's for now and hopefully i can get away with using these without maxing the duty cycles out
sorry the 24lb injectors claim to be 250cc which I would think is 25lb injectors... I dunno but I went ahead and just got the 24's for now and hopefully i can get away with using these without maxing the duty cycles out
Last edited by Justin96z28; Feb 29, 2016 at 03:25 PM.
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Staging Lane
Joined: Dec 2015
Posts: 56
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From: Killadelphia
Dammittttt yea see I know I'm on the verge of maxing 24s out but my car is my daily and I can't afford a tune till next paycycle..... So it sucks I'm going to throw 24s in and know they are running close to 100% duty from when it was dyno tuned last.... Running 30's really tat bad untuned??
Dammittttt yea see I know I'm on the verge of maxing 24s out but my car is my daily and I can't afford a tune till next paycycle..... So it sucks I'm going to throw 24s in and know they are running close to 100% duty from when it was dyno tuned last.... Running 30's really tat bad untuned??
Thread Starter
Staging Lane
Joined: Dec 2015
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From: Killadelphia
I ordered new 24s already :-( I'll iust get some 36s when I do my heads... With the 340lph fuel pump I'm not to worried about the 24s with a cam only setup... I wish I could find a cable or someone in the Phila had a cable I could use
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From: Maricopa, AZ
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From: Kernersville, NC
Do not use a ported MAF. Keep the stock unit, un-ported, with the screen installed.
If you want to buy a new stock unit, that is fine, but porting a MAF will completely screw up the MAF transfer function in the PCM.
It can be corrected, but you'll need tune it on a load bearing dyno.
If you want to buy a new stock unit, that is fine, but porting a MAF will completely screw up the MAF transfer function in the PCM.
It can be corrected, but you'll need tune it on a load bearing dyno.
Last edited by ACE1252; Feb 29, 2016 at 09:46 PM.
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From: Maricopa, AZ
TECH Addict
Joined: Dec 2010
Posts: 2,610
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From: Maricopa, AZ
Do you have the ALDL cable and programs? Man, you need a signature with your vehicle details. I would've told you to get the 30# injectors and post up your Tune. Anyone here could've changed the injector constant. If you supply the part number with the injectors we can find the Voltage offsets too. Easy change.
Thread Starter
Staging Lane
Joined: Dec 2015
Posts: 56
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From: Killadelphia
FML....... LOL I already got the injector's and installed them.. I went and got BOSCH 24#s which end up being like 25#'s on our fuelsystem solomon told me... FML see I knew I shoulda got the 30's!!! Dammit installed ran and cant return em.... Guess ill do a signature
Typical Flow Rate in CC per minute: 250 CC/min @ 43.5 PSI Actual flow rate of your injectors may vary, but will be matched together Resistance: 12 ohms (High Impedance, High Resistance) Voltage: 8-15 Volts, nominal 13.5 Volts Amperage: 1.0 Amps Pressure: Min 24 PSIG / Max 100 PSIG O-Rings Included: Yes, on the injectors Injector Body Design: Metal and composite plastic Fuel Delivery: Upgraded Four-hole disc fuel delivery nozzle for superior fuel atomization Electrical connector type: EV1 (Minitimer, Jetronic) Overall Length: 2 7/8 inches, 74 mm O-ring to O-ring Length: 2 1/2 inches, 63 mm Diameter: 16 mm Orings: Top and bottom, 14.5 mm -
Typical Flow Rate in CC per minute: 250 CC/min @ 43.5 PSI Actual flow rate of your injectors may vary, but will be matched together Resistance: 12 ohms (High Impedance, High Resistance) Voltage: 8-15 Volts, nominal 13.5 Volts Amperage: 1.0 Amps Pressure: Min 24 PSIG / Max 100 PSIG O-Rings Included: Yes, on the injectors Injector Body Design: Metal and composite plastic Fuel Delivery: Upgraded Four-hole disc fuel delivery nozzle for superior fuel atomization Electrical connector type: EV1 (Minitimer, Jetronic) Overall Length: 2 7/8 inches, 74 mm O-ring to O-ring Length: 2 1/2 inches, 63 mm Diameter: 16 mm Orings: Top and bottom, 14.5 mm -
Last edited by Justin96z28; Mar 8, 2016 at 02:59 PM. Reason: flowrates
Do you have the ALDL cable and programs? Man, you need a signature with your vehicle details. I would've told you to get the 30# injectors and post up your Tune. Anyone here could've changed the injector constant. If you supply the part number with the injectors we can find the Voltage offsets too. Easy change.
FML....... LOL I already got the injector's and installed them.. I went and got BOSCH 24#s which end up being like 25#'s on our fuelsystem solomon told me... FML see I knew I shoulda got the 30's!!! Dammit installed ran and cant return em.... Guess ill do a signature
