need help with mods(process,general stuff)

[Ghettodsm91]

hi im not new to dsms but im definitely new to tuning and modding. First off im looking for a good reliable street car. Im in the process of buying a 91 talon with rebuilt motor, slightly ported head, walbro fuel pump and boost controller. What im wanting to do is run a pretty decent time( mid 12s im hoping) on the 14b, with no internal work. This is my plan. From what ive gathered i was going with maybe 750cc injectors, stevetek fuel rail, hard wire fuel pump, dsm link, gm maf-t, fmic with custom piping, 3 inch exhaust with 02 elim, act 2600 or 2900 not sure yet, rebuild tranny eventually, koyo radiator. What do you guys think? Will i need anything else to really get it moving. Im looking at right around 1500, 2000 budget for parts. Thanks for help guys i appreciate it.


-kevin.

 

[Ghettodsm91]

i was also wondering if i really need the gm maf t because ive heard its not really worth it. I mean i can get a 2g mas for cheap, thats all i really need right? Im going to buy the dsm link though just because of how much tunability it has. What do you guys think about all this on stock 14b? thanks again.

 

[temfate]

I think you're going a little overboard with your plan for the time you are after. If you just follow the stage 1 mods listed at the tech guide pages you'll achieve that time for a lot less work and money. What you were planning would completely max out the 14b and be ready for a new turbo.

750cc is definitely high for your goal, 550cc would be fine, but not needed even. It would just be to insure you don't hit fuel cut. FMIC is completely unneeded unless you are going over 16psi of boost. A nice intercooler water spray might help instead if you plan to be racing a lot and need to cool the intercooler between runs.

 

[laxdudeee]

I agree with the above post, but go for the FMIC, big injectors and such (dont think you mentioned a fuel pump but a 190 would be good for your goals or a 255 w/AFPR) and later you can easily put a larger turbo (evo, 50 trim etc) and have the tunability with dsmlink. 2g mas is good for your goals but it would be good to get a blow-thru setup with the FMIC. So many options so many options.

 

[Ghettodsm91]

see now that sounds alot better with the fmic and dsmlink. What is a blow threw setup exactly? No mas?

 

[Ghettodsm91]

oh it already has a walbro 255hp. Im thinking aeromotive fpr, custom exhuast, ATR 3" o2 downpipe, maybe 750cc, fmic, custom piping and dsmlink.

 

[temfate]

It sounds like you mostly know what you are doing, yes you need a fpr if you already have a 255hp pump. The 750's I still say are high unless you plan on a 50trim or similar really soon. If you're gonna keep your 14b it's just a waste of money and will frustrate you when tuning dsmlink.

Remember, if you are gonna use dsmlink, you need a eprom ecu also. Do you have one?

Also, the blow through the other guy mentioned is just a setup with the GM MAF Translator which allows you to have the air sensor up near the throttle body, so air it literally "blown" through it. Your 2g mas will not allow that on it's own.

 

[Ghettodsm91]

oh ok well is that better to have it near the throttle body? Maybe 550cc are good for this application. I plan on upgrading to maybe a bb turbo setup once i have all the supporting mods. No i dont have a eprom ecu, i think? its a 91, i need to search . You're in co you know how hard it is to get a 12 timeslip hehe. Im going to try and do this on stock turbo but we shall see. So i need a 2gmaf or gm maf-t? Im really not going to go crazy on this car i mean it will be most daily driver worthy. Id say 2-3 days out of the week in traffic, back and forth from work.

 

[Ghettodsm91]

how do i tell if its eprom or not?

 

[Spoolin98]

how do i tell if its eprom or not?

http://www.dsmlink.com/faq.html#eprom_ecu

Just click on the question "How can i tell if i have a EPROM ECU in my car?"
I would suggest reading the rest of the FAQ's there and check out the rest of the site if your serious about DSMlink.

 

[steveVR4]

750cc is definitely high for your goal, 550cc would be fine, but not needed even. It would just be to insure you don't hit fuel cut.

Fuel cut has nothing to do with the size of your injectors.

 

[Ghettodsm91]

so it will be alot harder to tune with bigger injectors? Shouldnt it make it easier so that i dont knock/detonate? Im really new to tuning and all of this so forgive me.

 

[spyderturbo007]

If you are sure you are getting DSMLink, there is no reason not to get the biggest injectors on the planet. Upgrade right = upgrade once. When they socket your ECU all you have to do is let them know the size injectors. They will hard code the information, based on the size of the injectors, onto the chip so there is minimal injector compensation on your part. If you were getting a SAFC-II I would recommend a max size of 660cc. With the adjustment range of the SAFC-II and 660's, you will have a hard time tuning for race gas (you will be on the verge of maxing out the SAFC's range). But, since you are going for DSMLink....Go BIG!

 

[temfate]

Fuel cut has nothing to do with the size of your injectors.

Actually it does, by increasing the fuel into the cylinder per pulse, you became very rich. To fix this you lower the reading the air meter shows the car's ecu. Thus you move the point at which you hit fuel cut to a much higher amount of air.

Of course if you use dsmlink this is irrelevant I'll admit. But in my application it matters.

As for the original posters application, he made it clear that he originally intended to keep the 14b turbo and do this without much work or cost. I simply was stating that the 750's are way high for that application. Now if he truely does intend to upgrade the turbo at some point, the 750's will be useful. But until then they will make it harder to tune properly for a all around city car.

 

[temfate]

so it will be alot harder to tune with bigger injectors? Shouldnt it make it easier so that i dont knock/detonate? Im really new to tuning and all of this so forgive me.

Bigger injectors do a few things. Mainly:

1) Increase the amount of fuel into the cylinder per pulse, thus decreasing the duty cycle at which they are pulsed. This allows a higher horsepower to be achieved then could with the stock injectors.

2) With a S-AFC to tune them (works by tricking the ecu into thinking less air is flowing than actually is), it allows you to decrease the amount of air your car's ecu see's, thus moving fuel cut to a point later on than it would be otherwise.

To tune bigger injectors you would need dsmlink setup for the size you buy, or a s-afc. The afc is limited to a tuning range that would not handle anything bigger than 660 or so safely. Dsmlink is designed to tune pretty much anything on it's own, but with a huge injector your idle and fuel economy will never quite be the same.

 

[Ghettodsm91]

so what do you guys think of my mods list idea? IM going probably with 750 will this be shit for mpg and city driving? remember my car is going for a quick daily driver. I eventually will be uprgrading my turbo as well when i have all supporting mods on and so the turbo actually gets used properly.

 

[JessesTalon]

hi im not new to dsms but im definitely new to tuning and modding. First off im looking for a good reliable street car. Im in the process of buying a 91 talon with rebuilt motor, slightly ported head, walbro fuel pump and boost controller. What im wanting to do is run a pretty decent time( mid 12s im hoping) on the 14b, with no internal work. This is my plan. From what ive gathered i was going with maybe 750cc injectors, stevetek fuel rail, hard wire fuel pump, dsm link, gm maf-t, fmic with custom piping, 3 inch exhaust with 02 elim, act 2600 or 2900 not sure yet, rebuild tranny eventually, koyo radiator. What do you guys think? Will i need anything else to really get it moving. Im looking at right around 1500, 2000 budget for parts. Thanks for help guys i appreciate it.


-kevin.

good plan...


550cc injetors will be fine for 12's fuel rail is not needed
act 2600 is fine... don't need dsmlink...

id suggest adding a afpr, K&N filter with homedepot intake walbro 255 fuel pump and a street core fmic with 2.5" piping and a hks ssqv or similar bov...

if your stock radiator isn't leaking no need to replace it, if tranny shifts fine dont rebuild it...

i'd say about 17psi tuned well should get you into 12's no problem.

race gas and 22psi could net you a really low 12...

a guy here who has a 11 second race dsm had his wifes 1g at the track... maf-t race gas mix 22psi 3" exhaust and fmic ran a 12.3 @ 110 <-- friggen insane! everything else was stock even clutch...

 

[Ghettodsm91]

wow i love dsms. thats just crazy on a stock clutch, that thing will be toast i no time. Awesome stuff. So if i get 550 and apex afc with maybe 2g mas ill be good? Oh and the intake and walbro are already installed. DSMS gotta love them