what size injectors? 36lb too much?

blackstallion25 · 09-06-2007, 01:47 PM

so for those who dont know or forgot i have an 01 gt mods:block bored 30 over forged pistons rods ported heads stg2 cams new valves valve springs full exhaust full bolt ons. i know that on the 01 gt they only have 19 pound injectors my buddy has 36lb injectors for sale is that too much injector for my setup or what size injector should i go with thanks

r3dn3ck · 09-06-2007, 02:07 PM

24lb should suffice.

mpt_1962 · 09-06-2007, 10:40 PM

the 01 Gt's have 21lb injectors right?

*03gtmustang* · 09-07-2007, 07:07 AM

Your tuner wont have a problem making the 36's work, unless he has absolutely NO idea what hes doing. Too much injector is a lot better then too little.

Ask your tuner.

spike_africa · 09-07-2007, 07:23 AM

Quote:

Originally Posted by mpt_1962

the 01 Gt's have 21lb injectors right?

The 02-04 have pink ones which they say are 22# injectors, but some say they are just recolored 19#ers. I have yet to see some hard evidence on if they are really 22#ers or just 19# ones.

mpt_1962 · 09-07-2007, 07:56 AM

how would you be able to tell? What about when someone is tuning your car...do they have to factor in the injector size? Are there any tuners on here that would know the lb?

r3dn3ck · 09-07-2007, 08:19 AM

Quote:

Originally Posted by mpt_1962

the 01 Gt's have 21lb injectors right?

Shouldn't be any 01's with 21/22's. There might be a couple late production 01's but I've never seen one.

Quote:

Originally Posted by 03gtmustang

Your tuner wont have a problem making the 36's work, unless he has absolutely NO idea what hes doing. Too much injector is a lot better then too little.
Ask your tuner.

to a point yeah but drivability and mileage can suffer if he doesn't trim the slope right.

Quote:

Originally Posted by spike_africa

The 02-04 have pink ones which they say are 22# injectors, but some say they are just recolored 19#ers. I have yet to see some hard evidence on if they are really 22#ers or just 19# ones.

evidence would come in the form of a smoked motor. If you take out he pink tops and put in the yellow tops you'll run it hella lean. The adaptive controls should figure it out but not probably before engine damage.

Quote:

Originally Posted by mpt_1962

how would you be able to tell? What about when someone is tuning your car...do they have to factor in the injector size? Are there any tuners on here that would know the lb?

See above. I tune my own car with SCT software. There are pre-fabbed injector slope value files available for the various tuning softwares. SCT includes them with theirs. Once you've got the correct file loaded then you can move on to MAF xfer tinkerings and the rest of the process.

Your tuner knows on sight if he's done this enough times.

mpt_1962 · 09-07-2007, 08:42 AM

Well...guess that sums up this thread. Red how old are you? You know ALOT about...well...ALOT. Good info! Might have to have you check my tuning on my car when we have the GTG if you can bring a laptop and your software. I have a SCT Xcal-2. I could definately use your knowledge on the tuning part. I'm nervous about getting my car tuned for the first time. But i could definately buy you some food or something when we have the GTG for your time.

r3dn3ck · 09-07-2007, 09:55 AM

I can only look at the file but your tuner is better equipped than me to judge his work.

I'm... old.

bossman302 · 09-07-2007, 12:15 PM

Quote:

Originally Posted by spike_africa

The 02-04 have pink ones which they say are 22# injectors, but some say they are just recolored 19#ers. I have yet to see some hard evidence on if they are really 22#ers or just 19# ones.

I just want to add that my 2002 GT has 19# (yellow tops). So not all 2002's will have 21/22's

r3dn3ck · 09-07-2007, 12:23 PM

now that I have seen. Tell me... does your MAF sensor have 4 wires going into it or 6?

LMK... I've been collecting info on that.

spike_africa · 09-07-2007, 07:05 PM

Quote:

Originally Posted by bossman302

I just want to add that my 2002 GT has 19# (yellow tops). So not all 2002's will have 21/22's

what??????????

bossman302 · 09-07-2007, 07:22 PM

Quote:

Originally Posted by r3dn3ck

now that I have seen. Tell me... does your MAF sensor have 4 wires going into it or 6?

LMK... I've been collecting info on that.

I hope you have seen this since my car was in your drive way

My MAF has 6 wires.

Quote:

Originally Posted by spike_africa

what??????????

Yes, my car has 19# injectors. My water pump is also the long version. Go figure

WaterDR · 09-07-2007, 09:10 PM

I guess the bigger question might be "why do you need bigger ones?". I might be inclined to buy them if the price is right and just hold on to them until you are making enough power. Slapping on bigger injectors and paying for a tune really won't net you more power unless your tune was not right to begin with OR your current injectors are too small.

blackstallion25 · 09-08-2007, 07:33 AM

i think 19lb injectors are a lil small for my fully built setup

r3dn3ck · 09-08-2007, 08:34 AM

he's looking at 300rwhp on the high side... 19's are at the last few percent of their duty cycle making 365 engine hp. 21/22 pink tops are ok but I'd skip em and go to 24's for a bunch of reasons.

Remember, the rating of injector volume is for a specific pressure. If you don't know what you'll need then you can have your tuner tell you. If you're using a handheld then you can leave some leeway in the tune for a 2nd injector slope and upgrade if you find they're sliding up close to 100% duty cycle at WOT.

r3dn3ck · 09-08-2007, 08:35 AM

just like a bigger jets in a given size carb aren't always needed, bigger injectors aren't always the right thing.

Wait till the tune. you don't have run those 19's to fully 100%

mpt_1962 · 09-08-2007, 08:46 AM

yeah i was told to wait until i get heads to change the injectors. I have VT stage 2 cams and they dont pull enough to swap out the injectors yet. I was told to wait until after i get the heads to even think about the 24's.

blackstallion25 · 09-08-2007, 11:35 AM

i was thinkin about 30 lb? is that too much or should i just get the 24lb

rada · 09-08-2007, 12:56 PM

<---- Injector N00b...

Juat ran out an looked at my injectors - they're orange... Are they all color-coded to a certain poundage?

Are these stock?

mpt_1962 · 09-08-2007, 07:32 PM

not sure what orange is...but just go with the 24's blackstallion.

spike_africa · 09-08-2007, 08:07 PM

Quote:

Originally Posted by rada

<---- Injector N00b...

Juat ran out an looked at my injectors - they're orange... Are they all color-coded to a certain poundage?

Are these stock?

There color coded and orange is stock 19#ers.

blackstallion25 · 09-09-2007, 07:30 PM

thanks guys now do i need or should i buy a bigger maf to go with it i just have the stocker

r3dn3ck · 09-10-2007, 08:06 AM

you'll only ever need to contemplate a bigger maf when you add boost. You're still NA it would seem so no. You'll never need one unless that changes.

09-06-2007, 01:47 PM	#1 (permalink)
blackstallion25 Senior Member Join Date: Nov 2005 Posts: 110	what size injectors? 36lb too much? so for those who dont know or forgot i have an 01 gt mods:block bored 30 over forged pistons rods ported heads stg2 cams new valves valve springs full exhaust full bolt ons. i know that on the 01 gt they only have 19 pound injectors my buddy has 36lb injectors for sale is that too much injector for my setup or what size injector should i go with thanks

09-07-2007, 07:07 AM	#4 (permalink)
03gtmustang Super Moderator Join Date: Jan 2005 Location: Northern Va Posts: 3,241	Your tuner wont have a problem making the 36's work, unless he has absolutely NO idea what hes doing. Too much injector is a lot better then too little. Ask your tuner. __________________ D&D Auto Detailing -Dan

09-07-2007, 09:10 PM	#14 (permalink)
WaterDR Administrator Join Date: Sep 2004 Posts: 6,368	I guess the bigger question might be "why do you need bigger ones?". I might be inclined to buy them if the price is right and just hold on to them until you are making enough power. Slapping on bigger injectors and paying for a tune really won't net you more power unless your tune was not right to begin with OR your current injectors are too small. __________________ Black 2000 GT Vert: Novi-2000 with Intercooler (375rwhp @ 9 psi); Tune by Kauffmans; Roush 380R Body kit; Steeda Subframes; Steeda Strut Tower Support; Deep Dish Bullets; FRPP 4:10's; SCT 4 Position Chip with four custom tunes; Steeda CAI; C&L Pleum; BBK 75 TB; SLP Loudmouth; SLP Catted X-Pipe; Bullitt Suspension; UPR Conrol Arms; Focus Fuel Pump My Car My Email

09-08-2007, 12:56 PM	#20 (permalink)
rada Senior Member Join Date: May 2005 Location: Brea, CA Posts: 270	<---- Injector N00b... Juat ran out an looked at my injectors - they're orange... Are they all color-coded to a certain poundage? Are these stock? __________________ 01 Oxford White GT GO: MAC Cold Air Intake Accufab 70mm Throttlebody & Plenum Steeda T45 Short Throw Shifter Steeda Underdrive Pulleys Flowmaster Delta 40s 3.73 Gears MAC 2.5" Dual Catalytic H-Pipes 18x9 & 18x10 Black/Chrome Bullitts w/ Sumitomo HTRZ IIs Back: 285/35/R18 Front: 265/35/R18 SHOW: Mach 1 Grill Delete Chin Spoiler Sequential Tailights Redline QuickLIFT Elite Hood Struts Honeycomb Trim Panel Black Reflective "MUSTANG" lettering RADA's CarDomain Page

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09-06-2007, 02:07 PM	#2 (permalink)
r3dn3ck Wowbagger hates me too! Join Date: Nov 2005 Location: Magrathea/California Posts: 6,856	24lb should suffice.

09-06-2007, 10:40 PM	#3 (permalink)
mpt_1962 Senior Member Join Date: Jun 2007 Location: Twentynine Palms, CA Posts: 816	the 01 Gt's have 21lb injectors right?

09-07-2007, 07:56 AM	#6 (permalink)
mpt_1962 Senior Member Join Date: Jun 2007 Location: Twentynine Palms, CA Posts: 816	how would you be able to tell? What about when someone is tuning your car...do they have to factor in the injector size? Are there any tuners on here that would know the lb?

09-07-2007, 08:42 AM	#8 (permalink)
mpt_1962 Senior Member Join Date: Jun 2007 Location: Twentynine Palms, CA Posts: 816	Well...guess that sums up this thread. Red how old are you? You know ALOT about...well...ALOT. Good info! Might have to have you check my tuning on my car when we have the GTG if you can bring a laptop and your software. I have a SCT Xcal-2. I could definately use your knowledge on the tuning part. I'm nervous about getting my car tuned for the first time. But i could definately buy you some food or something when we have the GTG for your time.

09-07-2007, 09:55 AM	#9 (permalink)
r3dn3ck Wowbagger hates me too! Join Date: Nov 2005 Location: Magrathea/California Posts: 6,856	I can only look at the file but your tuner is better equipped than me to judge his work. I'm... old.

09-07-2007, 12:23 PM	#11 (permalink)
r3dn3ck Wowbagger hates me too! Join Date: Nov 2005 Location: Magrathea/California Posts: 6,856	now that I have seen. Tell me... does your MAF sensor have 4 wires going into it or 6? LMK... I've been collecting info on that.

09-08-2007, 07:33 AM	#15 (permalink)
blackstallion25 Senior Member Join Date: Nov 2005 Posts: 110	i think 19lb injectors are a lil small for my fully built setup

09-08-2007, 08:34 AM	#16 (permalink)
r3dn3ck Wowbagger hates me too! Join Date: Nov 2005 Location: Magrathea/California Posts: 6,856	he's looking at 300rwhp on the high side... 19's are at the last few percent of their duty cycle making 365 engine hp. 21/22 pink tops are ok but I'd skip em and go to 24's for a bunch of reasons. Remember, the rating of injector volume is for a specific pressure. If you don't know what you'll need then you can have your tuner tell you. If you're using a handheld then you can leave some leeway in the tune for a 2nd injector slope and upgrade if you find they're sliding up close to 100% duty cycle at WOT.

09-08-2007, 08:35 AM	#17 (permalink)
r3dn3ck Wowbagger hates me too! Join Date: Nov 2005 Location: Magrathea/California Posts: 6,856	just like a bigger jets in a given size carb aren't always needed, bigger injectors aren't always the right thing. Wait till the tune. you don't have run those 19's to fully 100%

09-08-2007, 08:46 AM	#18 (permalink)
mpt_1962 Senior Member Join Date: Jun 2007 Location: Twentynine Palms, CA Posts: 816	yeah i was told to wait until i get heads to change the injectors. I have VT stage 2 cams and they dont pull enough to swap out the injectors yet. I was told to wait until after i get the heads to even think about the 24's.

09-08-2007, 11:35 AM	#19 (permalink)
blackstallion25 Senior Member Join Date: Nov 2005 Posts: 110	i was thinkin about 30 lb? is that too much or should i just get the 24lb

09-08-2007, 07:32 PM	#21 (permalink)
mpt_1962 Senior Member Join Date: Jun 2007 Location: Twentynine Palms, CA Posts: 816	not sure what orange is...but just go with the 24's blackstallion.

09-09-2007, 07:30 PM	#23 (permalink)
blackstallion25 Senior Member Join Date: Nov 2005 Posts: 110	thanks guys now do i need or should i buy a bigger maf to go with it i just have the stocker

09-10-2007, 08:06 AM	#24 (permalink)
r3dn3ck Wowbagger hates me too! Join Date: Nov 2005 Location: Magrathea/California Posts: 6,856	you'll only ever need to contemplate a bigger maf when you add boost. You're still NA it would seem so no. You'll never need one unless that changes.