this could very well be the answer. but that raises an additional question. If u have the fuel why the hell would u limit your boost to 10psi? or 12psi?

 

i love my exhaust smell...reminds me of my childhood and all the two-stroke bikes and quads i have owned! lol

i think my eyes built up a tolerance to the emmissions my car puts out. it was much worse when i initially took out the cats.

 

good thread,I would love to see some data on blown engines .what % midpipe/hi flo cat.My car was real torquey with my hiflo and boltons.fritz even admitted that that fact when he compared it to one of his higher hp fds,that had a pfc,injectors and a midpipe .of course this fd was faster on the top end than mine.I thought a midpipe with stock twins and boltons was only 10-15 hp more than a 3 inch hiflow cat.

 

i think it adds alot more. one thing i have learned is that dynoes are complete BS. i dont beleive one dyno sheet unless the guy has a trap speed to back it up....i dont care who the guy is or how long he has been around.

what u need to look at are peoples trap speed...i see alot of guys trapping 110-113mph with high flow cats vs guys like myself trapping 118mph with a midpipe.

 

I'm not saying don't run a mp, I'm saying be careful using one with a stock wg .

coolvette, a midpipe can give 20-30 rwhp gains over a stock main cat, with a highflow it depends on the brand/quality of the cat i think.

 

honestly, i think it might be even more than that!!! i cant pull out any dyno charts right now. But rich, didnt u used to have a hiogh flow cat with all the boltons? What were u trappign with all the boltons....113mph? 5 mph difference in traps is about 50rwhp difference.

 

I am picking up my next fd(single turbo 62-1) in a few weeks.rob can put on a hi flo cat on it but.,he told told me to keep on the midpipe.he felt the car made 30-40 more hp with a midpipe vrs a highflo cat. so, i guess if i am going for a 400 rwhp fd,midpipe will stay on.

 

Honestly man, it's been so long I can't remember. I think those 113 traps may have been with a midpipe....given the same boost level, there is no way it is giving 50 rwhp.

 

I have an answer for ya

Little history here:

Currently I have two boost settings 10 psi and 12 psi. After I relaced my magnaflow exhaust with RB duals, I experienced creep on third and fourth gear (at the higher RPMS of course) the boost leveled off at 11 psi. At 12 psi it is not a factor. Once I get off my *** and purchase my injectors I will set my high boost to 14-15 psi, but will still remain the low boost in it's current setting.

I keep my boost low most of the time because I enjoy to WOT . Why add the extra stress to my engine if I don't have to. I click on high boost when I need it.

 

let me give u alittle advice....i said the same EXACT things when i was where u were in the modding game. but once u run 15psi u will get hooked on it. no question in my mind about that. you will see. i started out using both settings...slowly but shirely the 12psi setting was never used. i say the process was about 2 months to phase out the lowert boost setting completely. Especially once i got a hks twin power!!

15psi is no biggie. There are ENGINE BUILDERS AND TUNERS on this site that will telll u to go ahead and run 17psi if u have the fuel. i can feel the flame coming already for that comment! but guys do do it and like i said i been runnign 15psi for several yrs...about 30k miles and as i said earlier i have tracked the car (ran lower boost thoguh for track), run at etown, and enjoy spirited driving in the country side. people around here blow their motor on low boost. 15psi or 350ish rwhp is perfect in our light weight cars. my car has had zero issues...its more reliable than my honda accord.

Let me ask you, what makes more sense? listening to guys who are on their thrid motor or listen to a guy that runs the crap out of his stock original engine for just about 7 yrs now. you are gonna love i15psi!

basically what i am saying with all this(boost creep and runnign some decent boost) is dont believe the BS u read on this site. if u do u will go slow. if u listen to the right people u will be faster and be having some fun not looking at your gauges constantly like the man wants you to. Some people around here go around scaring thecrap out of newbies. there may be alittle truth to some of it. But my opionion is thats its way over exagerated. What fun is it to drive a car that u are constantly scared of breaking!!!??

jeeze i am getting alittle out of hand now but this **** needs to be said. There are guys aroiund here that share my opinion....dont make me call u out.lol!

 

Hell, if you think 15 psi is fun on those rinky-dink hitachi ht12s, wait til you upgrade to some real turbo(s).....I can't remember when the last time was that I intentionally ran less than 15 psi (aside from the road course)......probably like 2002, lol.

 

A stock sequential 15psi car is a very fun car to drive. the sequential system when functioning properly is awesome.

But its time. if i remeber correctly, your car blew hence the modding game began again for you. Problem is that my car been a dream to me (wierd how thats a problem huh)...been waiting for engine to blow to upgrade the turbo and port. its a tough call to change a perfectly balanced and fast car in the name of more power. but gonna do it this winter no matter what. and i am doing it right, 20 plus psi on a big'ish single. A small single doesnt make any sense as the cars main purpose isnt road racing. upgraded parallel twins dont make sense for me either....if i am gonna deal with lag....500 horsies better show up when the boost hits.not 400! Actually i have no clue what the logic is for upgraded twins....low cost i guess....????

 

Three words: visual smog check

Actually five more words: more fun on the street (assuming you aren't trying to beat heavily modded cars on the highway 90% of the time.....like I know you are :poke: )

 

yes i am. well sort of.

so many cars these days have big v8s with n20...thats not heavily moddified. its a $2k mod on a stock car. Let me tell you....those things rip and are everywhere around here.

 

matty,I sold my perfect low mile fd ,stock twins with boltons that was 100% realiable. and now i am buying a single turbo,in search of bigger hp.I hope my new car dosnt dosnt destroy my bank account.the fd+more hp addiction is a strong one.

 

It happens regularly when someone gets a midpipe for cheap, or out of ignorance buys a full exhaust on a near stock car. To get to 15psi you need fuel pump, boost control, intercooler, ECU, and injector upgrades, and bel willing to deal with the turbos and engine not lasting quite as long. I see almost a couple grand in that list. You need none of that if you can keep it at 10psi.

Of course, the more sensible ones would only install a midpipe after doing all those other upgrades first, but who am I to suggest anyone wants to be sensible.

Dave

 

What if I told you that's not me. I have had the ability to run 12 psi vs 10 for a few months now. And like I said earlier I'm always runing around at 10. I have even raced people at 10 too, just because I didn't think that I needed the extra 2 psi. Nothing is gonna change after I can boost to 15. The only thing that is keeping me from boosting higher is injectors, because I have everything else.


I just don't see the need to add extra stress. I don't have to MAX the car to it's potential everyday so I don't.

 

there is no extra stress...its perfectly fine if u have the fuel and tune is my point. but do what u want.....drive a slower car that u are spending $$$$ on to go faster.

 

this thread is confusing... with a greddy intakes/v-mount setup/enfini pipe/greddy elbow, stock ports/turboes (till i go BNR3s and a streetport), PFC, DP/res MP/& cat back, and fuel setup(500hp kit/1600cc) will i need a boost controller too or has the PFC, fuel kit, tuning and ported wastegate taken care of that by then?

also i was under the impression that 14.75lbs/300-350 was getting to the thresh-hold on stock turbos.

 

no additional stress??? WTF? I guess that's why non turbo rotaries last just as long as turbo ones. Oh **** no they don't.


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