Injectors And Tune. (it's Not The Dead Horse Y'all Are Thinking If)

You cannot have to big of a fuel pump. Any extra fuel that is not used is returned back to the tank. Install the pump asap! Then when you go for the tune you can upgrade the injectors,ditch the fmu,calibrate the Maf,etcetera. You can "grow" into the fuel pump size but it won't hurt anything in the meantime
Thank you sir. Am I going to need anything else like a new pigtail or will the gss340 bolt up and plug in like factory?
 
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Thank you sir. Am I going to need anything else like a new pigtail or will the gss340 bolt up and plug in like factory?
All the needed parts come with. The only things you may run into are the neck grommet,hose clamps,etc for dropping the tank. I got my stuff from late model restoration a couple years ago. They have a descent install video also.
 
The wait list for a tune is rediculously long, we're taking months. Could I put the pump in and drive around with the fmu and 19's and then upgrade injectors just prior to the tune or will the 255 lph pump not work w out a tune either?
Not enough tuners in your area. Dude, you need to move! LOL
Install the pump. A higher capacity fuel pump does not affect the tune whatsoever. With a return style fuel system unused fuel is circulated back into the fuel tank. Its a continuous loop of fuel. Higher capacity pumps just move that fuel faster.
 
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Not enough tuners in your area. Dude, you need to move!
There are 2 shops that I know of in the DFW area, Dallas Mustang and HPP Racing. Hpp kinda has me by the short hairs. Since they've tuned it before they don't charge for the tuning just for the dyno time. "Free" lifetime tunes(as long as they're in business and we know how these places can come and go)that usually comes out to be in the $200 range. I called Dallas Mustsng and they wanted something like $500 even though I already have the sct chip.
 
There are 2 shops that I know of in the DFW area, Dallas Mustang and HPP Racing. Hpp kinda has me by the short hairs. Since they've tuned it before they don't charge for the tuning just for the dyno time. "Free" lifetime tunes(as long as they're in business and we know how these places can come and go)that usually comes out to be in the $200 range. I called Dallas Mustsng and they wanted something like $500 even though I already have the sct chip.

500, wow that's rape; 4 pulls today with tuning $159.97, worth the money. I would pay $200 though, I think that's a little more reasonable. Shop around.
 
500, wow that's rape; 4 pulls today with tuning $159.97, worth the money. I would pay $200 though, I think that's a little more reasonable. Shop around.
Oh and the $500 was for the first time and I had to buy the sct chip, it might have been closer to $700 now that I'm thinking about it. The 2nd time I went the free tuning came out around $200. This will be her 3rd trip for a "free" tune, I'm hopping its gonna be around $200
 
Oh and the $500 was for the first time and I had to buy the sct chip, it might have been closer to $700 now that I'm thinking about it. The 2nd time I went the free tuning came out around $200. This will be her 3rd trip for a "free" tune, I'm hopping its gonna be around $200

Free tune with the most expensive dyno pulls around. 3 rips shouldn't be more than $100
 
Free tune with the most expensive dyno pulls around. 3 rips shouldn't be more than $100
Tuning a blower car is not just 3 rips on the dyno. I was on the dyno from 1030am-330pm. Do i think its a bit high (his quote) - yes , but there is alot going into getting the tune dead on.
My vote- 42s, MAF , Aero 340 pump.
 
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Anyone that is meticulous is literally going to take hours of dyno time.
I'd be concerned by any shops time that isn't worth $100 an hour when using a dyno. I'd figure at least a 3 hour minimum, and i can see it going past 5 hours easily.

You get what you pay for, at $159 i'm guessing that aint much when it comes to computer tuning.
 
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Anyone that is meticulous is literally going to take hours of dyno time.
I'd be concerned by any shops time that isn't worth $100 an hour when using a dyno. I'd figure at least a 3 hour minimum, and i can see it going past 5 hours easily.

You get what you pay for, at $159 i'm guessing that aint much when it comes to computer tuning.
Not much to tune just simple hci. I am confident I got the most out of the tune. I know his blower combo is a lot more involved, I was just making the point that saying the tune is free is disingenuous. I hate that kind of marketing.
 
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Dyno time is going to depend on the car and how much time the shop wants to spend (and the customer) on getting it right. These setups have been done for 20+ years so there should be no mysteries. If the tuner can get it dialed in within within an hour, great. If it takes him 3 hours, then so be it.
 
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Not much to tune just simple hci. I am confident I got the most out of the tune. I know his blower combo is a lot more involved, I was just making the point that saying the tune is free is disingenuous. I hate that kind of marketing.

I know there isn't much to a hci dyno tune, that's why i suggest that people don't bother. Pay the $75 for the dyno runs, see how much power the car makes and move on.

You can do the same with a blower setup, but you have to know where you are at (or at least have a clue). Blower setups are a little less predictable because there is so many combo's of parts.
 
I know there isn't much to a hci dyno tune, that's why i suggest that people don't bother. Pay the $75 for the dyno runs, see how much power the car makes and move on.

You can do the same with a blower setup, but you have to know where you are at (or at least have a clue). Blower setups are a little less predictable because there is so many combo's of parts.


I have to go with xp8 this time. I believe whole heartedly in digital tuning but if you have a way to read Air/Fuel ratio, then this much tuning can be accomplished through mechanical means.

I hands down, prefer digital tuning for blower apps SPECIFICALLY because I do not like running injectors above intended pressures and that modified air meters will only get you so far with large injectors.

I can think of only a few scenarios where digital tuning might be necessary for a basic HCI and MAF.

Were it me, I'd invest in a good wideband, and adjustable fpr, and a timing light.
 
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