how to go from 10 to 17mpg (city) with RENIX

[xj88kjetil]

Just for information:

I DID run injector cleaner on my old RENIX injector without noticing any difference afterwards... I used a product from FORTE, that we sell at the workshop where I work. It has a really good reputation over here (Norway) and is very expensive... This one bottle actually cost me about the same as I paid for the injectors.... (60$)

(Note- This is the kind of cleaner that is put in the fuel tank along with about 5 gallons of fuel.)

 

[joe_peters]

Just for information:

I DID run injector cleaner on my old RENIX injector without noticing any difference afterwards... I used a product from FORTE, that we sell at the workshop where I work. It has a really good reputation over here (Norway) and is very expensive... This one bottle actually cost me about the same as I paid for the injectors.... (60$)

(Note- This is the kind of cleaner that is put in the fuel tank along with about 5 gallons of fuel.)

Do a search on the internet about using acetone as a fuel additive.

Are you using ethanol in Norway?

 

[vortex]

Excellent find i too am running 32's and get about 11 MPG so i will be going to the junkyard today.

-PJ-

 

[xj88kjetil]

Do a search on the internet about using acetone as a fuel additive.

Are you using ethanol in Norway?

Well, they do have E85 pumps in the bigger cities, but as I live in a somewhat remote are I don't have access to it....

As for acetone in the fuel, I really don't know but I'm VEEERY sceptical to methods not used/recommended by the larger car manufacturers... Those guys put billions of dollars into research to make the car go a few more feet per gallon, in order to meet govt. emission standards (at least in Europe ), and I can't believe anynything would stop Toyota, VW or others from using this even if the effect was only half as good as claimed on many web pages... Same goes for the magnet trick...

I'm sooo sick of people telling me "I know a guy who put magnets on his fuel lines, and now he gets twice the milage" or something to that effect. Then they tell me the car manufacturers don't use this because it's patented and only the patent holder can sell them... And the company selling them is a lousy two-man enterprise not big enough to get stuck between Fords teeth should they decide to swallow them...

EVERYONE REMEMBER THESE WISE WORD:
"NOONE is better at decieving YOU than you are! Keep that in mind when considering what to believe!

Authors note: :shhh:
I think it's a conspiracy, where they use peoples fear of conspiracies by the oil companies, to make money somehow... That's rich, isn't it? Me believing that there's a conspiracy to make people believe there's another conspiracy.... And people falling for it... Now my mind is so messed up by this conspiracy conspiracy I don't know who is conspiring against whom, or who is making money of it... I know it's not me, for sure...

Sorry... Hard day, late night, too much coffee etc. You know the feeling...

 

[joe_peters]

Here we are now mandated E15, 15 % ethanol mixed with Dino fuel. E85 is 85 % ethanol and can only be used in the special "multi-fuel" vehicles.

I have never tried the acetone, but it makes me curious. I don't hold much for miracle-in-can or magnets or even the "Tornado" intake toys--just hype IMHO.

Happy Trails.

 

[stephenspann27]

I'm planning on upgrading the injectors in my LT-1, then putting my LT-1 Injectors on my Renix.. so I get two upgrades in one purchase...

 

[Fastdemise]

anybody thought of just rebuilding the stock injectors?? I have the 01 XJ. Just thinking out load.

 

[joe_peters]

I'm planning on upgrading the injectors in my LT-1, then putting my LT-1 Injectors on my Renix.. so I get two upgrades in one purchase...

Dang hippie recyclers! Just kidding!

 

[pma4x4]

FWIW

Just got my set for my 96 4.0. Smoother idle, crisp throttle response through entire band. more power at bottom end seems like, course my butt dyno may be out of tune. I have gained almost 2.5mpg

http://precisionautoinjectors.com/c...577730E858F4594E18E.qscstrfrnt03?categoryId=3

 

[Slip Kid]

FWIW

Just got my set for my 96 4.0. Smoother idle, crisp throttle response through entire band. more power at bottom end seems like, course my butt dyno may be out of tune. I have gained almost 2.5mpg

http://precisionautoinjectors.com/c...577730E858F4594E18E.qscstrfrnt03?categoryId=3

You replaced 23lb injectors with 19 lb?

 

[pma4x4]

You replaced 23lb injectors with 19 lb?

96-98 application are 24lb ford injectors.

I thought I would just post this link for the fuel injectors.

 

[cher96]

$236.90 for injectors! OMG

Might as well go with Ford 5.0 24#ders for 161.95 and save some money.
http://precisionautoinjectors.com/product.sc?categoryId=2&productId=5

 

[pma4x4]

It may have been the difference between a Saturated driver and a peak & hold driver as to why 96-98 injectors are a bit more. My FIs plugs are std Bosch style like most fords. Might be some measurements are a bit different as to not fit in the 4.0 HO style rails and intake ports.

Still cheaper then OEM or parts store and better then used. Lifetime warranty. Matched and rebuilt from the ground up like the racing ones.

Either way it made a huge difference and I am satisfied with the cost considering most replacement FIs are in the 40-80 $$ each range.

 

[XJ Beater]

just scored a set of ford 19lb injectors off ebay for a whopping 9 bucks shipped, ill let em soak overnight in injector cleaner then toss em in. theyre out of a 01 mustang gt with 75k on em

 

[pma4x4]

Cant complain for that price at all. Nice score!

 

[Backroads]

It may have been the difference between a Saturated driver and a peak & hold driver as to why 96-98 injectors are a bit more. My FIs plugs are std Bosch style like most fords. Might be some measurements are a bit different as to not fit in the 4.0 HO style rails and intake ports.

Still cheaper then OEM or parts store and better then used. Lifetime warranty. Matched and rebuilt from the ground up like the racing ones.

Either way it made a huge difference and I am satisfied with the cost considering most replacement FIs are in the 40-80 $$ each range.

curious about this. What years (xj) were saturated injectors, and which years were peak + hold?

Same for the ford ones. I've got a 94 cherokee and wouldnt mind swapping mine out.

 

[300$XJ]

curious about this. What years (xj) were saturated injectors, and which years were peak + hold?

Same for the ford ones. I've got a 94 cherokee and wouldnt mind swapping mine out.

x2 mine is a 93 and wouldn't mind swapping, just not sure what ones to use? are these a direct plug in? or do ya have to cut and splice the wires?

 

[XJ00RHD]

I'm not the most technically savvy person around, but I know enough to know that altering the injectors could bollox a piston, or you could overpressure the new injectors w/ a pump that's too strong.
I'd thought you only changed injectors when you added a header, or changed out the cam or something.
I have a '00 4.0 with one engine mod: a K&N air filter; and I'm trying to maximize fuel efficiency (w/o changing out my 3.55's). Are there any of these handy efficiency-improving injectors safe for the longevity of my motor? If so, which one/what's the NAPA part no?

 

[codysown]

these?

I bought those.


Cody

 

[tomcat]

for all you '99+ guys, the injector electrical connectors changed in '99. i just picked up a set of these to run the ford 24# injectors:
http://www.compperformancegroupstor...ct_Code=170603_1_8&Category_Code=HarnesesConn
the little red safety clip retainers are also very fragile, and break pretty easily when trying to remove them.