Lack Of Power

[Enes]

Well here is list of my setup

50 trim
550cc rc injectors
190whinebro
ported 2g exhaust mani
external wg
2 1/2dp
3 catback
factory cat
gredy large fmic
type s bov
maft
bpr7 sparkplugs
magnecore wires
1g intake cam gear 2g one got bent..
just did timing belt job and balance shaft elim

no boost leaks
18psi of boost
pump gas
3 counts of knock at 7300rpm
only made 260whp

i need your opinions what could be wrong with my car... i will be going thru the whole engine bay to see if i am having something unpluged or a vacum line since i only get 15 for vacum at idle, and it used to be 18 before

I can't adjust my base timing since its a 2g... but i will check it today with the light
i'll check compression today too
but i need your suggestions what else i would need to check..

i made 260+ last year on t28 without ported mani and balance shafts removed..

-E


-E

[JET]

Have you double checked the timing marks for the timing belt? If you are one tooth off on one gear, it will just be sluggish and down on power.

What kind of AFR's where you running?

[niterydr]

compression test?
stock lower piping?
when did you do the boost leak test last?
just a few ideas.

[Super Bleeder!!]

stock cat?!?!?!?!?!? what exactly do you put into that milk of yours?

[Enes]

ok, these compression tests were done on a cold engine... i'll do same tests tonight on a warm engine.
i did compression test and here is what i found when the gauge moved 4 times the comp showed as
1 165
2 168
3 170
4 172


when it pumped up 10 times
1 175
2 178
3 175
4 175


As for the cat, i don't like the raspy catless sound ..
but yeah i like trees...

-E

[Enes]

Originally posted by niterydr@Jun 12 2004, 04:38 PM
compression test?
stock lower piping?
when did you do the boost leak test last?
just a few ideas.

Yes stock lower flexible pipe...


boost leak test was done on the dyno, there was a pin hole one but its minor ..

i heard some air bubling in the oil pan like its leaking by the turbo oil seals, and this is a brand new turbo..


anything else?

-E

[A//// Guy]

So you have a 50 trim with all boltons to support it but then you throw a stock measely 1.5" cat? I have a freeflow cat that I am willing to sell if you want it. Its 2.5 inches and quiets my exhaust quite a bit. I have a testpipe so I dont really need it any more.

Im not sure what your problem could be maybe turn up the boost some more

Check your timing too.. If your pulling 15 for vacuum your timing might be off or you have a leak somewhere.

[Enes]

how much do you want for the high flow cat?

-E

[bigbrothajake]

I've studied fluid flow in school. So by that credibility and not from automotive experience, I would say you have two restrictions. You have an exhaust flow restricting where you should get a 3 inch dia. catalytic converter.

You have not fully utilized your 190 lph fuel pump. With the aid of an AFC and an SX FPR, you should be able to control your fuel pressure and fuel feed. The next step as I've studied would be to replace your entire stock fuel lines (www.stevetek.com) so that you would increase your fuel volumetric flow rate without increasing the fuel pressure.

My hope is that you will have been enlightened to travel a new avenue in search of your solution. Put that 0.500 trim to work!

Bigbrothajake

[A//// Guy]

Hmm Im not sure, maybe like $75-80?

[Enes]

a bit pricey i think

-E

[Enes]

the above compression test list was done on cold engine. I will check compression tonight on hot/warm engine... and i will let you know the results then..

-E

[SlowWhite]

Enes is running DSMLINK V2 so he doesn't need a SAFC.


Enes honestly your cat is the major problem IMO. Your restricting so much flow.

Trying to run the Volume of Air that a 50 trim can produce through a 1.5" Cat is probably "backing up the system" so to speak.

And the stock lower piping as well would be something I'd upgrade.


I can't see anything else wrong with your system. but having a 3" exhaust is useless if your still running a 1.5" cat.

[Raptor]

Compression is definately not an issue. Like we talked about before, I would up your timing globally a bit. I agree with everyone on the cat and IC piping. Your fuel system I am sure is fine for now.

[Shane@DBPerformance]

Originally posted by bigbrothajake@Jun 15 2004, 10:48 PM
I've studied fluid flow in school. So by that credibility and not from automotive experience, I would say you have two restrictions. You have an exhaust flow restricting where you should get a 3 inch dia. catalytic converter.

You have not fully utilized your 190 lph fuel pump. With the aid of an AFC and an SX FPR, you should be able to control your fuel pressure and fuel feed. The next step as I've studied would be to replace your entire stock fuel lines (www.stevetek.com) so that you would increase your fuel volumetric flow rate without increasing the fuel pressure.

My hope is that you will have been enlightened to travel a new avenue in search of your solution. Put that 0.500 trim to work!

Bigbrothajake

The cat is probably hurting it some. But the 190lph pump and stock fuel lines are nowhere near capacity. He should be able to make well into the 400s at the wheels with the 190 and over 500 on the stock fuel lines. He already has great control over the fuel with the DSMLink.

[A//// Guy]

Well if you want the Cat make me an offer but Im not going to lower much as I paid 150.

And what the hell does "the other sister" mean?

[Raptor]

Ask in a different thread Peter. OT.

[LOAF]

Originally posted by Enes@Jun 15 2004, 11:18 PM
a bit pricey i think

-E

I don't think so, you should buy it.

[Kracka]

The stock lower IC pipe should be fine, that thing is just as big as the metal IC pipe going to the intercooler. The stock cat is deffiantely your biggest restriction right now, Peter's is at a good price, or you could go find a new 3" (or better yet get a testpipe).

[1Fst14B]

Originally posted by bigbrothajake@Jun 15 2004, 10:48 PM
I've studied fluid flow in school. So by that credibility and not from automotive experience, I would say you have two restrictions. You have an exhaust flow restricting where you should get a 3 inch dia. catalytic converter.

You have not fully utilized your 190 lph fuel pump. With the aid of an AFC and an SX FPR, you should be able to control your fuel pressure and fuel feed. The next step as I've studied would be to replace your entire stock fuel lines (www.stevetek.com) so that you would increase your fuel volumetric flow rate without increasing the fuel pressure.

My hope is that you will have been enlightened to travel a new avenue in search of your solution. Put that 0.500 trim to work!

Bigbrothajake

it took school to come up with that conclusion???

damn, i wish i woulda gone to school, then i would have known that...Thanks!!


too good for college,
Adam