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Ok, got a 86 SVO. Doing some mods with a new motor, Ported head, big valves Ranger Cam, new .030 forged pistons and a new T3 / T4 turbo. I am installing a 255lph intank pump and a adjustable FPR. I am not too familiar with the computer and the VAM in SVO's, What is required when changing injectors. I would like to put a set of 42's in it. Will I have to have a chip done for the computer or do you have to do some kinda recal on the VAM? Wanna make this car a fun daily driver but wanna do it right.....
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Your best bet is get yourself a EEC Tuner (best bang for the buck). It's a piggy-back programmer that's pretty darn effective. Gator has one .. and can probably give you alot of tips about them. -
Yea, Eddie at Racer Walsh down here said something about that but I've heard mixed comments on them.Comment
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well .. there's always SDS
You can drop in 42lb inj .. and it will run. But, it will run very RICH at idle and you WILL have a funky idle until the computer gets use to them being in there. Even so .. it will run rich at idle... and more than likely be fat across the entire rpm range.Comment
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Ok, gotcha. Gonna have to look into it more. I have a local chassis dyno and a guy how burns chips on site. He is really good with the Ford computers. Might look into that route.Comment
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Bud,You can drop in 42lb inj .. and it will run. But, it will run very RICH at idle and you WILL have a funky idle until the computer gets use to them being in there. Even so .. it will run rich at idle... and more than likely be fat across the entire rpm range.
With an adjustable FPR, you would be able to turn down the fuel pressure a bit to compensate for larger injectors. See the calculations on this page:
However, the ideal situation is to have the EEC know what size injectors are installed so that it can manage the fuel supply throughout the entire range of engine operation.
BoostedSVO,
If you try the above mentioned approach, it would be best to have a A/F ratio meter to verify your adjustments. The local chassis dyno could also help you with tuning the pressure.Mike S
'86 SVO 9L Leather
'86 SVO 9L Road Warrior
'96 300ZXTTComment
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Nope. I've tried using them before. Ty has also .. as well some other guys here. No matter what you try .. they load up at idle pretty bad. Especially on cold mornings. Don't get me wrong, they WILL work - just not on par to what I would want from the 'total package'.Originally posted by GAboySVO
Bud,
With an adjustable FPR, you would be able to turn down the fuel pressure a bit to compensate for larger injectors. See the calculations on this page:
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hey, does the adjustable fuel pressure regulator have to be used in conjunction with the 255 lb/hr fuel pump? i guess my fuel pump is bad.Comment
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no .. any unused fuel will be returned to the tank, BUT .. if you intend on upping your boost levels, increasing the size of your turbo, porting your head and using bigger valves, or so on .. you WILL need the adj fpr. BTW - this exact same question was just asked and answered earlier this week .. http://www.svoca.com/forum/showthrea...&threadid=4444Originally posted by kennycoulter
hey, does the adjustable fuel pressure regulator have to be used in conjunction with the 255 lb/hr fuel pump? i guess my fuel pump is bad.
please use the SEARCH feature in the future. thanks.Comment
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