16g not as torquey as t25??

[Gst18]

Hi guys...

First of all i would like to name the mods i have done to the engine...

Stock 7 bolt block
Rebuilt head w/ 3 angle valve job and 1mm oversized valves.
Ported Evo III Big 16g turbo with 34mm flapper.
Ported Exaust Mani.
Ported t25 o2 housing with Custom exhaust dump.
3 inch downpipe
maf-T
24 X 12 X 3 FMIC
RFL BOV
Injen Intake
Stock fuel system.
Im currently running the turbo at 12 psi.

My question is... I had all this stuff done to my car before i put on the 16g turbo and for some reason i would be able to roast them so hard in first and part of second....
My problem is that the upgraded turbo doesnt seem to help the torque.
I can barely roast the same tires in first if i get lucky...

I dont know what could have caused this...

BTW my turbo spools at about 2900-3000 and is at full boost by 3300 Tires are Kuhmo Ecstas on stock gsx wheels.

If u guys have any ideas please let me know.

Thanks

 

[Turbocharged]

MyBeatGSX, I wasn't looking for an arguement I was just stating some facts.

1 HP = 550 ft-lb/s
power = torque/time = rate of change of torque with rpms
where
torque = force * distance
power = force * speed

As you can see the relationship is linear. If you have flat torque through the rpm band, your horsepower will increase as a straight line. That was the only point I was trying to clarify. I'm not a car salesman, I'm a chemical engineer.

 

[Siral3x]

Any 16G need fuel system upgrade period!
Yes I remember my 95GST , I was smoking those soft rubber Kumho Ecstas all the way in 1st, and small part of 2nd gear, then after 5k the t25 is worthless.
I would motion cams, springs with TI retainers for best performance with the 16G
Have fun, and don't snap any axels

 

[MyBeatGSX]

MyBeatGSX, I wasn't looking for an arguement I was just stating some facts.

It wasn't directed at you. I just found that first line in your post kind of funny, because that's something I've actually heard salesman and other various morons say (nothing implied about you).

It was for everyone reading... so hopefully it doesn't get brought up in another topic or need to be explained again.

 

[Gst18]

does anyone know what size injectors i need and what kind of fpr?

 

[2gGSX]

At least 550cc injectors preferably 650cc range ones. You won't need an AFPR unless you get something bigger than a rewired 190 lph pump.

 

[Ultimatedsm]

Well if your talking about wheel torque, throw those factory horsepower/torque figures in the garbage.

If your engine makes 300 ft-ibs at whatever RPM and your final drive ratio is 3.5:1 in first, your making 1050 ib-fts of torque in first gear. In 4th gear usually your 1:1 ratio gear, your car only makes 300 ft-ibs of torque and you notice if you start your car from a stop in 4th, your car won't go anywhere because you don't have enough torque at the wheels at lower RPM's to move.

Anyway, I just like to throw that in their for fun. Anyway, you will never make the same low end power with a larger turbo period. What you lose in the lower revs you gain a lot more in the higher revs. If you boost your T-25 at 16 psi and do the 1/4, you will be lucky to trap 94MPH (Due to the turbo dropping in boost at high revs to around 11 psi). Now if you do that with a 16g and boost 16 psi, you will trap a lot more than 94 mph. Of course if everything is tuned properly and you will be needing fuel mods at that point. However, even at 12 psi, your 16g should be faster because there is still increase airflow. You should race a stock car dsm on the track and find out for yourself.

 

[ShapeGSX]

Get 660s. 550s will eventually be too small for you.

 

[chanley talon]

My car is a automatic ! I have a small 16 g on it and i know i have a boost leaks but wacth this video . Oh its off a cell phone so some of you may not be able to play it.
http://media.putfile.com/MOV00010-77 regarding tire spining

 

[DSMunknown]

Get 660s. 550s will eventually be too small for you.

josh, just regarding injector sizes for the 16G, and assuming he will not upgrade the turbo, wouldn't 580s be more than enough? supposedly if the 16G is being pushed to its limits, so are upgraded 550s.

http://www.extremepsi.com/store/customer/product.php?productid=16332&cat=628&page=1

or are 580s only a marginal improvement over 550s?

 

[ShapeGSX]

660s are very comfortable with the Evo III 16G. I think I get a max duty cycle of around 80% or so.

Injectors tend to go static around 90% or so. So you can no longer control your fuel. The injectors are just on 100% of the time.

I think 580s would be close.

550s are right out, though.

 

[RiceKiller_TSi]

I've hit (accidentally) 30psi with my PTE 580's and I didn't blow up. I wasn't logging at the time so I dont know how lean I got.

 

[MyBeatGSX]

Hey, you're only 3 months late!

Why do people reply to threads on page 15+?

 

[RiceKiller_TSi]

Better late than never negative Nelly!

What are you talking about pages 15+? Theres only two pages here.

 

[carsaval]

I cant belevie you invested that much and left your fuel alone.
trust me get some 550cc or better yet get some evo injectors. I got my 560cc evo injectors new for 150. get a fuel pump walbro 190lph, or 255lph(get an aeromotive a1000 fpr). Alos reiwre your fuel pump when i had my 14b i would start losing power in the higher rpms with stock pupm then i reiwred it and it would still accelerate past 6000.
I cant really help you witha burn out. I dont understand the fasination with those. its just lost power and your damaging your tires. You can do your burnout at launch if you want but i wont be able to look back fast enough to see it.

 

[carsaval]

i didnt realize how old this thread is .

 

[RiceKiller_TSi]

three months aint that bad... I've seen em come back from over a year!
Some mod will come close it in a little while.