tomaszjc7

I Still dont get it.... been doing searches for the last hour!!

Some one pease explain these setups... advantages and disadvantages???

tomaszjc7

That really doesnt asnwer my question.... i dont care "how" its done i want to know what it does and what the differneces are...

rotorbrain

usually, parallel and non-seq are the stated in regards to the stock twins . . . both turbos spooling at the same time. you may be talking about single.

sequential:

advantages: more low end torque, better for driving around town, . . . . hmm, cant really think of anything else. im sure someone else will chime in.

disadvantages: "the rats nest", boost spike and creep, 13-15psi peak (safely) boost, heavy, cluttering (the whole setup)

nonseq. (parallel):

advantages:no more rats nest, great on the highway, no spike at transition, while you modify for this mod you can fix the boost creep problem (you can also fix the creep problem on seq), LESS HEADACHE!!!

disadvantages: you still have the stock twins. . . max boost (unless modified) is still the same, less low end torque, must have aftermarket ecu. . . im really tired and cant think

single turbo:

advantages: higher hp and boost capabilities, more reliable turbocharger setup, less weight, better looking (IMO), more efficient, no rats nest, cleaner engine bay, better wastegate (no boost creep. . . if the right one is bought), no rats nest (yes, i know i stated that twice), some turbos give you full boost close to where the stock twins give you full boost, im sure there are others. . .

disadvantages: $$$$$$$$$$$$$$$$$$. . . possible lag problem depending on the turbo. . . im really tired and am not going to screw this up anymore. ill pass it on to someone else. sorry.

paul


edit: cool ryans on (hey, ryan!!!!) he can answer more than i offered. . . again im sorry.

jspecracer7

Sequential is a stock FD setup. One turbine boosts, pre spools the turbine. At a designated boost point on the first turbine, the secondary turbine comes on line.

Non-Sequential is a stock FD setup modified. Both stock turbine's come on line at the same time.

Parallel is a true twin turbo setup meaning there are two turbine's with two exhaust housings and two downpipes that connect in a Y and down to a single downpipe. KSP FC/FD are good examples of Parallel turbos.

KevinK2

For a taste of non-seq, on open road:

with my 93, stock or upgraded ecu, I casually ease up to 5800 rpm in 2nd, shift to 3rd and let off gas completely. once rpms drop to 3500 nail it. This locks in non-seq parallel mode .... no transition.

I have usual intake/exh/IC stuff .... boost climbs quick in 3rd with little lag. Likely more sluggish in 4th, haven't tried it.

Snook

iTrader: (12)

All I know is:

dont be a rikki REALLY likes non-seq.
It's all over the forum like every other thread I read is him bragging and arguing that it's faster in the 1/4 mile if you have mods.
I wish this guy lived next to me so he could work on my car.
Did you just want info on what it was or were you actually going to do it?
I would just leave it stock man there is no reason why you should switch over because you are just asking for trouble. They forgot to tell you that this pretty much rapes the turbos much faster than the seq. setup.
I believe that it's faster but it's not worth it for 3 tenths of a second in the 1/4 mile and a reduction of 40k miles off of the life of your turbos.

good luck
Snook

R1Outcast

I've never heard of this before. Can anyone else back this up?

FstFD3SPOWER

i heard turbo runs much cooler so it LEAST long..
quote from rikki
I need some help to going for no seq set up don't be a rikki.. waht is Metal T?