Intercoolers is a must.... TB and plenum can wait...

 

i am running a cargraphic 1.3 tune. 5barfpr/gt2ic's/evoms dv's/1.0wg actuators. will the larger plenum and 997t tb help add power with nothing additional added or re-tuned?

i have been told by those that work on them that is the next logical step and possibly also adding the 72lb injectors. but i'm not looking to go beyond the 500rwhp. i am told, that just adding the 74mm plenum will get me there as i am close that number now.

what might i be missing? and thanks for the input. i'm not trying to confuse anyone or myself. i am setup per above with the 16/24's and have been for some time. thx again for any advice.

 

I disagree... ben there done that... your gt2ICs are pushing 65 deg C temps and thats robbing you of HP... your not addressing the issue...
log 3rd and 4th full throttle... you will see... check the intake and outside temps...
address the weak point not something extra one does because he has money to spare.
Or, stop listening to us do what "others" tell you... in my opinion, your being misguided.
Do a full log of the car... show me that its running well first... rpm, engine load, ignition angle, actual afrs, and boost... then do another one with intake temps...
then we can talk... until then your wasting time and money...

 

disagree with what? and who is us exactly? so what's the misguided advice? that the larger plenum will not add hp? and what "issue"? are you referring to?! maxing out the injectors? or you're saying already exceeding the ic's ability to dissipate heat? ok, glad i asked lol never mind but thanks. i ask about a plenum and you get twisted about it?! wtf.

but yeah, money is no issue lol i guess i'll just spend a grand and see what happens and i won't listen to turbo mike ever again sheesh.

thx again for the advice though.. i think lol

 

Turbo mike is a good guy.
If I had $1000 I would spend more and get really good big ics.
Plenum will not make you go backwards but I doubt it will give you 30whp whereas good ics will. Log your car. Address the issue not expand it. I'm trying to give you an honest opinion.
If you can do both. That simple.

 

That's all I was asking. If there was a downside or backwards. Nothing really more than that.
Thanks for the honest advice!

 

As others have said, the turbo inlet piping is a big hp mod as far as bolt-ons go...

I was a believer in bolt-on power before upgrading my turbos. Now its a lot of work and tuning just to squeeze out another 20whp.. Without more fuel, and more turbo/tune you'll have a hard time gaining 35whp.

My car dyno'd 577whp, and when I did custom turbo intakes and ran a touch more boost, I then made 610whp. Thats it. These are custom fender intakes, 2.5" piping, huge cone filter... no restriction.

People say that you can gain 40whp from switching to fender intakes... Theres no way unless the current piping is a huge restriction.

HOWEVER.. You would probably gain 15-20whp doing the fender intakes or inlet piping... I reccommend FVD's or 911tuning.com's soft inlet pipes.

PS: You could always throw a methanol system on ($1200 installed) and retune... Then you could pick up 40whp instead of your 35 goal.

 

thanks for that. the mention of the added 35 hp was optimistic and that number is from all the papers on the plenums. not necessarily real world and i ( now ) realize that.

my issue here ( one anyway ) is that i can't get into anything that will raise red flags when it's time for emmisions testing since i live in a socialist state and they want to look up my rear every chance they get. but i will look into whether or not i can do the stuff you mention while keeping the car "looking" stock. "they" would never look at my tb or plenum, though smogging here is beginning to feel like a proctological exam, so you understand my concern(s). they would flag me for red inlet piping, of that i am sure. i'm not going anywhere near a meth kit or anything that pushes the car over 600hp. car has 118K miles and i feel i'm good with 30/50hp more if i can find it? but not much more without adding undue stress to the motor that'll ( maybe ) end up costing me down the road.

my goal was just to squeeze out a *bit* more hp/tq with the setup i've got and i figured if that could be achieved with the plenum and a cpl hours or messing with it, then i was all about it. but i'm doing my diligence here, and greatly appreciate the input.

this was the kind of info i had hoped for when i posted. thx again.

 

in your case Meth would be perfect adding 15-30 hp and extra safety to your setup in case you run bad fuel!then later if you decide to build your engine or push more you current setup you can easily add 60hp++ with it
remember Meth cool your iat,suppress knock,raise octane and add fuel
one of the best bang for your $$$ out there

 

doesn't that require all that piping etc going to the frunk with the canister? or am i completely mistaken and confusing that with motons!? lol

 

... i'm getting the picture. thanks guys.

 

HI,,Turbo Mike is a great guy..
I hate to say it but I have did some dynoing with a plenum and a also 74 TB at my 18g level ,,which I have posted in the past, And all I can say is I would say is I didn't see that big gain ....

 

would you do it again? knowing where I'm at?

 

I would do TB when over 700hp, at least... i did over 800hp on stock TB and the power/torque curves were healthy.. I admit at those power levels TB will give bigger gains not only in power, but also in spool... for your setup do ICs or meth, or both... your engine will be happy... we see a lot of timing retard even on stock maps, ICs or meth will improve those losses a lot.. meth will be better but ICs are more reliable.. you choose.. i have 4.5ICs and the best meth kit i have found on the market. You need to install the meth lines under the car, yes... If you will stop bellow 700hp do gt2rs ICs otherwise at least 3.5"
TB doesnt require retune; neither ICs or meth unless you want to squeeze every drop of power and do a meth tune

Recently I added IPD 82mm competition plenum

 

thanks fadi and johnspeed. leaning heavily toward the tb/plenum w injectors. my old tired gt2 ic's though small should hold up. i'm a quick blaster, not a sustained speed kind of guy anyway.

so as long as i don't end up going backwards or maxing out stuff to the degree it doesnt work? and even if quicker spool or even a bit more tq down low is all i gain? then thats cool. its just a hobby anyway. but again, i'm certain i am staying away from a meth kit. don't even like the sound of it lol

thx again.