This is topic reasons for my 11mpg?!?!?! in forum Tech Talk at Northern California Ford Owners  .


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Posted by andyman_2k01 (Member # 1448) on :
 
ok i just recently put on a saleen series II supercharger with a pulley change to the 10psi pulley. Before I was getting around 260-280 miles to the tank N/A (freeway and town mixed) and now I am getting 160-180 miles to the tank. I went from 19lb injectors to 30lb injectors, and I am staying out of boost 80% of the time. Not to mention I am driving 60mph on the freeway just to do so. I only made 286rwhp and 335rwtq (with the pulley change). Any ideas on why my gas mileage is so terrible? For that amount of power I wouldn't think it would be so bad. Filling up $20 almost every day is pretty terrible.
 
Posted by HungryHippo (Member # 537) on :
 
you need a tune, its probably running way rich
 
Posted by 98slowhoe 'FIFTYLX' (Member # 895) on :
 
quote:
Originally posted by HungryHippo:
you need a tune, its probably running way rich

Yeah 30# injectors is still a lot of fuel even though its concered mild compared to other set-ups out there. Might want to tune it a little make sure you are getting the correct A/F ratio.
 
Posted by slidewayz94 (Member # 3101) on :
 
quote:
Originally posted by 98slowhoe 'FIFTYLX':
quote:
Originally posted by HungryHippo:
you need a tune, its probably running way rich

Yeah 30# injectors is still a lot of fuel even though its concered mild compared to other set-ups out there. Might want to tune it a little make sure you are getting the correct A/F ratio.
I think the ford racing supercahrgers for the SOHC 4.6 come with 30 lbs also.
 
Posted by TRIXSNK (Member # 2844) on :
 
quote:
Originally posted by HungryHippo:
you need a tune, its probably running way rich

[patriot]
 
Posted by andyman_2k01 (Member # 1448) on :
 
i got it tuned by jayl's shop. my a/f ratio is 11.7(he said that is really good). But he also told me I am running rich, around 60psi when i heard i should be around 35-40psi. reccommendations on getting my richness down?
 
Posted by andyman_2k01 (Member # 1448) on :
 
oh and i put in an SVT focus fuel pump.
 
Posted by HungryHippo (Member # 537) on :
 
well it should have been tuned at 40psi. are you running an fmu?
 
Posted by losbadgt (Member # 4394) on :
 
fu** u are running to rich and why so little hp, this is a 2000 gt right, cause the numbers don't look right to me.
 
Posted by andyman_2k01 (Member # 1448) on :
 
2001 gt motor with built bottom end. The #'s seem really low for what I have done to it. My next step is to get a magnaflow catback and a high flow catted x-pipe. But even still, with 9-10lbs of boost I should be a lot higher than 286rwhp. Any suggestions on how to get it not to run so rich?
 
Posted by Jeff S (Member # 371) on :
 
Has your car been datalogged?
 
Posted by andyman_2k01 (Member # 1448) on :
 
no i don't believe so
 
Posted by BlackNGold (Member # 655) on :
 
your tune is with a custom burnt chip, right?...I can't believe you only have that much rwhp with 10 of boost...You're down atleast 80rwhp....

What do you're plugs look like?...
 
Posted by Hater (Member # 3085) on :
 
You should be at the 350rwhp with the pulley change,,if that is the Chicane pulley I used to have,,they have a 99gt with that same set up making 355rwhp,,give them a call,,,Chicane Sport Tuning.
 
Posted by 1WICKEDmach (Member # 4060) on :
 
Thier is a new performance shop called racetune in hayward. The owner Frank has a dynapack dyno wich is the best tuning dyno in the world. You should give him a call, he is the best tuner ive ever seen. He tunes everythin from mustangs to 800rwhp supras. He could check out your car and will tell you exactly what is wrong with it.

http://www.racetune.net/ (510)672-2808

[ October 14, 2004, 11:39 AM: Message edited by: 1WICKEDmach ]
 
Posted by andyman_2k01 (Member # 1448) on :
 
i'm using a pulley from reichard racing which is a 2.6 size. checked my plugs and they looked fine. Changed em at jayl's tune shop about 1500 miles ago. believe me, i am a little depressed about spending so much and getting so little gain in hp.
 




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