I know!!!! what supporting mods for a t28

[-=TWITCH=-]

I know this has been covered before I searched but didnt find exactly what I was looking for so I though I would just ask!

my current mods

brobe UICP
1G bov
hallman MBC @ 15 Psi
K&N filter charger kit


future mods

3" turbo back exhaust
o2 eliminator dump
test pipe
thermal R&D
AGP or FP ?T-28
walbro ?? dont know what size I need
Do I need bigger injectors?
what do I need to make sure I run safe?

thanks alot

 

[candela]

Just follow the tuning guides... Search harder and dont be so specific like " what do I need to get next...". this was covered 3 times in the last 2 days in the 2.0 performance section so search in here. Your mods you would need or should get are the same as what anyone should do before a turbo upgrade, and very similar to a 16g...

 

[froodawg]

Here would be my suggestion:

Get your whole exhaust done before you slap on the larger turbo ... have the o2 and manifold ported to match. That's all that I would consider necessary ... this is assuming that you do have at least a boost gauge installed as well as the other mods you listed.

Other 'suggestions' would include injectors, fuel pump, upgraded IC, AFC, and short-throw shifter. Those'd just be to fine tune, but not necessary ... the 28 can use your stock oil lines and etc from the t25.

 

[-=TWITCH=-]

what are the stock injectors good to?
if I upgrade the fuel pump what can the injectors handle PSi wise with the 28?

 

[larryd]

I think people are running around 15psi on the stock injectors/fuel pump on a T28 or Big28 type turbo but Ill tell you if you really want to get full advantage of this turbo you really need a new pump and injectors.. I suggest Denso 190 pump and RC Eng 550s.. thats what I had when I had my Big28..

 

[-=TWITCH=-]

how did your car run! was the big28 worth it? should I do it

 

[Rallsport]

I have a regular T-28 and currently run stock injectors with a larger fuel pump (choose size for your future horsepower goal), adjustable fuel pressure regulator with base fuel pressure raised to 53 psi. Boost is set with MBC to 17-17.5 psi. Just did a log tonight running Sunoco 94 air intake temp 87 deg and was running third gear at 6980 rpm, 19 deg timing, 27.26 lb/min air, O2 0.96 volt. Injectors were very close to 100% near redline, haven't hit fuel cut but I'm sure it's pretty close. This is pretty much all you can do until going to larger injectors and a way to control them. Upgraded intercooling is strongly recommended beyond this point also.

 

[larryd]

Originally posted by -=TWITCH=-
how did your car run! was the big28 worth it? should I do it

car ran great.. i honestly miss my old setup as it was fun to drive and not to worrisome about if I broke.. I ran a 13.7 @ 109mph on c16 and coulda done alot better if the car had been tuned

 

[-=TWITCH=-]

Originally posted by larryd


car ran great.. i honestly miss my old setup as it was fun to drive and not to worrisome about if I broke.. I ran a 13.7 @ 109mph on c16 and coulda done alot better if the car had been tuned

nice

 

[GSTBoostin]

do u regret spending all the money on the new setup larry? (nothing towards agp is intended here) just curious if these huge turbos r really worth the money, time, effort, and probability of breaking

 

[-=TWITCH=-]

larry you get mad props your car is awesome!!! 13's are my goals what do you run with your new setup? nice car

 

[CBgst]

I know someone that was running 18psi on the stock injectors with a big 28. He said that was all he could go though. I can't remember how much timing he was getting at 18psi but it was pretty good up until 120mph. I do recommend injectors but they are not a nessisity. You can do those later when you get some more dough. A feul pump is must though

 

[-=TWITCH=-]

I cant wait!!!!!!!! I want a bigt28 so bad, I cant remeber when do tax returns happen? I think Im going to try and save for a full 3" exhaust and then when I get my tax return Ill buy my bigt28. thanks for all the help.

 

[larryd]

Originally posted by GSTBoostin
do u regret spending all the money on the new setup larry? (nothing towards agp is intended here) just curious if these huge turbos r really worth the money, time, effort, and probability of breaking

do I regret it.. no.. I wish I didnt have issues from the beginnign when my oil pump went the first time causing my big28 to eat itself.. I miss the way the car ran back then.... it was dependable and really quick.. the car is straight out fast as hell to me right now.. but tuning is a nightmare and with the oil issues Ive had ive been pondering getting rid of the car on a daily basis..

 

[-=TWITCH=-]

Originally posted by larryd


do I regret it.. no.. I wish I didnt have issues from the beginnign when my oil pump went the first time causing my big28 to eat itself.. I miss the way the car ran back then.... it was dependable and really quick.. the car is straight out fast as hell to me right now.. but tuning is a nightmare and with the oil issues Ive had ive been pondering getting rid of the car on a daily basis..

really that kinda sucks its being so much of a pain the ass to you. its a badass car I wish I had your kinda cash flow I hope the big28 will work ok for me!

twitch

 

[larryd]

i can only reply to that sayig i wish i had the $$ ive spent on this car back.. thats all