Well, My buddy and I are rebuilding my engine. Well actually, he'll be doing that part It will be ported, by him as well. Twins are new, injectors are cleand, etc. I can't decide weather to go Full non-sequential or Simplified Sequential.

Problem with Full Non-Sequential is The lag and the Loudness. It will be too loud with open exhaust and big port, and i'm not a big fan of it.

Simplified Sequential, only problem i see is putting that stuff back together and I don't know how will the transition be with Heavy Port.

What do you guys think? IF I went non-seq with Big port and open exhaust, at what RPM would i have 14psi?


Thanks a lot.

 

I have a full non-seq and intake, downpipe, Racing Beat Cat back.... Idling is pretty loud for my taste... like a muscle car idle.... I really don't like it that much.... but it sounds good at higher RPM's... Anyways.... you will get 14 pounds of boost at around 3500 rpms.
At least thats what mine does.... and after that...hold on to your seats!!~~~

 

Is your engine stock?

With Heavey ported engine, i should get boost earlier, right? My concern is First gear mostly.

Amel

 

How does non-seq make your cars louder? I'm missing the technical logic behind this...

 

I'm a fan of seq. set up.. So, I would lean more toward doing non seq.. Its pretty simple and works well!

 

Do not go non seq. What are you worried about with simplified sequential? It's great, just about 26ish hoses and easy to setup. You wont get 14psi by 3500 trust me

I wouldn't let your friend rebuild your engine though and especially port it...that's the part you don't want to go cheap on its kinda important.

oh and what happened to your engine before? if you broke an apex seal your new turbos may not be so new any more

 

There is no problem with the transition in relation to porting. RTS3GEN has a Raceported motor from Pettit and has been running sequential for years without a problem. I've been in the car and it's a monster.

lol...

 

since i'm going to have to bite the simplification bullet soon, i need a block off plate kit to do it right? and do i need to order gaskets too?

 

Well, you should use Block Off plates to do it right. You don't need gaskets with them, just a thin layer of gasket sealer will work just fine with the plates.

 

im runnin the non-seq 99 specs...hit full boost closer to 3800? 3500 youll still be building

but it is alot of fun id defly recommend it

 

seq is quieter at idle becase all the exhaust is going into one turbo exhaust housing, so theres more back pressure, its like having another muffler.

Michael

 

i'm running simplified sequential. i'd sooner go single that non seq.

 

FULL NON-SEQUENTIAL
385 RWHP (Mustang Dyno) 1.05 Bar (15.2 psi) peak from PFC
11.83 @ 116 1.03 Bar (14.9 psi) peak from PFC

I'm not missing the sequentials at all!!

Mods in sig:

 

How about someone running 11:77 sequentially on the stock fuel system (using a Pettit ECU)?

 

I ran stock seq, then simplified seq, then finally non seq. I liked the simplified pretty well, if you REALLY want do stay seq go that route. Personally if it was me I'd do what I already did and go non seq.

The non seq is going to start making more power at about 3500rpms if its FULL NON SEQ. Even if your boost isnt all the way up it doesnt matter, cause boost for boost the non seq will make more power up to about 5Krpms because its running 2 turbos not 1 like seq is. If you keep everything the same non seq should start making more power at 3500rpms.

Pressure isnt everything, the efficiency of the airflow is what matters and its definatly better when your running 2 turbos instead of one.

Side benifit is this...imagine how easy it will be to leave all that **** laying in the garage and only use 2-3 vacume lines. When you look under the uim all you'll see is fuel rails and the top of the engine.....sounds good to be, I love it.

Stephen

 

Non sequential does not cause you car to be any louder. Who is the retard that started that? Personally i think non sequential is the way to go if you have twins. Its the lack of shitty boost spikes and transition that is the real bonus, not the engine bay space you gain.

 

never drove sequential.. my car was already coverted to non seq when i bought it.. the guy even told me that the car is slow and im like huh? then he said the magic happens after 4k and im like smiling thinking ok, what is wrong? its gonna blow huh?

so i took it out on the highway, short shifted 1st and 2nd, brought it to third and i waited for some free road, i punched it, it lagged since i was at 3000rpm, 4000rpm i can feel some magic, by 4500rpm, i was pissing in my pants holding on to the steering wheel.. LOL

and thats only 10psi, its at 8 right now but still, i dont think i ever want to experience to seq LOL

 

Want to bet? Non-sequential with full exhaust is much louder under 4,500 rpm than sequential is. Above, they're basically the same.

Several FDs with exhausts dyno'd on the same day I did. I even had a stock cat-back on my car at the time while I was waiting on my RB twin tip, and a Borla XR-1 in the midpipe. Everyone stood around and watched while the other FDs were on the dyno. When it was my turn, by the time I ended my first run, the only guy left in the service bay was the dyno operator, and he had ear muffs on. Everyone else quickly vacated with their hands over their ears.

So... are you calling me a retard?

 

damn, i knew my car sounded louder than my friends fd..

lol doh

 

It looks though I am if you are arguing with me based on the fact that people there left the room while your car was on the dyno. Show me some decibe readings and I'll retract my comment other wise Derrrr...

 

Why bother? Everyone except you seems to know that non-sequential is louder below 4.5k. I was just trying to clue you in so that you didn't look so damn ignorant.

 

Well I'm about to go non-seq on my car tomorrow so how bout I pull some decible readings before and after

I'm just curious from a technical point how it's really louder or what exactly causes it to be louder. I mean in my mind it "might" be a little bit louder but not like "OMG thats so loud"

Anyway we shall see tomorrow...

 

. I am wondering to whom I look ingnorant. The newbs who don't know any better or your presumptuous ***? Either way I'm not sweating it so please don't do me any favors old man. I would also like to ask, since you claim they are at the same noise level above 4500rpm, why would anyone need to leave the shop due to excesive sound during your dyno pull? Do you actually believe all that horseshit you spout off?

 

"Non sequential does not cause you car to be any louder. Who is the retard that started that?"
You're asking who's the retard that started that??? Or who is the retard,??? I think you've answered that question...any one whos done the switch will tell you that non seq is a whole hell of a lot louder than seq...its not even debatable.

 

[QUOTE=Rotarded]FULL NON-SEQUENTIAL
385 RWHP (Mustang Dyno) 1.05 Bar (15.2 psi) peak from PFC
QUOTE]

Those are some nice numbers! I see 14.7-15.2 PSI by 3800+ RPM.
Street Port, poor mans' NS conversion,
Only 316 RWHP @14 PSI