twin or single????

[sonsters]

hey guys, im thinking about turbo'n in about a year... i was wondering which is better single or twin for the z.... which is more deadly to an engine? which is more cost effective? which one has bigger gains? better spool? best company to use?.... iv heard alot about turbonetics single kit and aps twin turbo kits.... i want to get gains of around 150-190 but without the worry of throwing a rod or blown engine or just having a bad turbo/turbo kit... and if any of yall out there have a turbo kit? lmk what yall think thnxs guys!

[C-Kwik]

The biggest difference between the two (without addressing compressor efficiency differences inherent of different turbos) is that the typical twin turbo kit will place the turbos much closer to the exhaust ports. The Turbonetics single turbo kit places the turbo far away from both sets of ports. More heat energy will be lost in the single turbo system as a result. This may result in slightly slower spool and slightly less power, but it could depend on each kit's choice of turbos. Neither set-up in that of itself is going to be inherently more reliable. Assuming parts of the turbo system itself do not fail, it can really come down to the tuning and how efficient the actual kits are.

[sonsters]

ah thnx man!

[rmezz13]

The APS twin kits are very powerful but seem to fall short on having everything you need. JWT also makes a good twin kit. I personally am going to go with the Turbonetics 60-1 kit. Also look into the UTEC by TurboXS (ecu). will get you max power out of that kit.

[sonsters]

yeah... i saw u post pretty much same thing about that on another forum.... how much is the average boost a z can safely run at?? im guessin either way ill go upgradin internals is a MUST... what bout supercharger? would i have to upgrade internals with that? ( they dont produce as much power so i wouldnt think so)

[evildky]

I'm a fan of the single turbo kits, they cost less, cost less to modify, have less piping and less plumbing

[rmezz13]

I don't know about safely on a built motor, but with boost nothing is "safe". I would say it would be as high as 9psi. I've seen a lot of people running 9 psi on stock internals, and its probably what i am going to run when ever i get the money to turbo my car. Now most of your turbo kits are rated between like 5 to about 9 psi. I don't know about SC, never really looked into it for this car. I read somewhere some guy got like (i think) 17 psi out of an SC on a Z, i don't know it was awhile ago, but i am sure it was built to handle that muck boost. Also, if you plan on building your internals for turbo, go turbo first. You might change your mind, + you don't want to be driving around with low compression!

[sonsters]

dang 17 on a sc thats kinda alot for a SC... so i can run a single turbo kinda safely on stock internals at around 7 psi??? i ran my old z at 16 lbs. and it felt pretty good lol..... reason for me tradin old skool for new is i raced a 350z with a turbo ( not sure if twin or single but it took him longer to get boost so im guessing he had single) in htown and he smoked me.... with the mods i had i shoulda had between 400-430 hp on stock turbos..... but im still pretty strong on single turbo... who or what does good ecu work for the single turbo set up??? and out of the turbonetics kit is there anythin in the kit that should b swapped for another manufactorer???

[evildky]

keep in mind all psi is nto equal, psi is a measure of pressure, lbs/min is a measure of volume, 5 psi form a turbo that flows 60 lbs/min is twice as much air as 5 psi at 30 lbs/min, also intake temp, matters, an intake charge at 220 degrees will not make as much power as the same charge at 120 degrees

[simplewon]

Twins

[rmezz13]

The turbonetics kit is 8.5 psi on the stock car. The only upgrade i would go with from that kit is instead of the reflash, go with the UTEC by TurboXS.

[evildky]

they are NOT rated in cfm, that would tell you the volume with no consideration of the pressure, lbs/min is how they are rated which tells you exactly how much air they are moving, and generally speaking 1 lb/min will make about 10hp, so a turbo that flows 53 lbs/min is capable of making aprox 530 hp, this will vary a bit based of the countless vsriavles but thermodynamics limit how much power can be made from a specific volume of air

Cfm tells only the speed at which atmospheric air isovedpsi tells us how much pressure any given measure of air is underlbs/min tells us how much volume of air is moved in a minute

[sonsters]

The turbonetics kit is 8.5 psi on the stock car. The only upgrade i would go with from that kit is instead of the reflash, go with the UTEC by TurboXS.

Is that utec a stand alone??? what else should i do before or when i decide to get that turbo kit (if i pick the turbonetics)?

[rmezz13]

i believe it is a stand alone, you'll have to look it up, or i can and let you know for sure later.... there is nothing you need to do, it is a bolt on kit, if you go with the utec you'll have to have it tuned, and it will require a boost solenoid and map selector. Get with whom ever you will have tune it (as in a shop) and they should be able to get what all you need. For example, the place thats going to do my tuning is getting me everything for cheaper than i can get it (including the turbo kit) charging me $630 for install and if i do the utec upgrade right away they will give me free tuning which if i wait on the utec will cost $500.... so for $630 on top of cost, i am getting the kit installed and tuned, or i could install it my self and run into a mess then have them charge me $500 to tune it.... thats why i am having all off mine professionally done as far as turbo.

[sonsters]

o i agree unless the car comes stock turbo, ill always have a pro. do my turbo upgrade.... is this utec program pretty much like tha AEM?? if i do turbo im pretty close to z1 so ill prolly ask them to do it well man u pretty much convinced me to go with turbonetics single kit..... let me know ur #'s and alla that great stuff.... VIDEO it....

[evildky]

utec is a piggyback, most systems work in conjunction with the stock ecu, a stand alone replaces the stock ecu

[sonsters]

can this utec be put on before turbo kit and help performance with jus stock parts or upgraded CAI and exhaust?

[rmezz13]

utec is a piggyback, most systems work in conjunction with the stock ecu, a stand alone replaces the stock ecu

Thats correct^^^^^^ i'm still a little green in some places....

I won't be doing any turbo stuff until (at the earliest) next summer. If sooner i will let you know, and i will post my numbers and mods.