TURBO B18B OR LS/VTEC?OR LITTLE LONGER AND LS/VTEC TURBO

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TURBO B18B OR LS/VTEC?OR LITTLE LONGER AND LS/VTEC TURBO

By x-racer
- Mon Dec 10, 2007 4:16 am #32965 im kinda getting tired of my stock ls.so im trying to see what i can do with it.so far i got a chance do a head swap.its pretty cheap but if i wait 2 month more with my income i can boost it.and if i wait a couple of months like till october or something i can probley do a ls/vtec turbo.but i want to know how much hp i can crank out on a stock ls turbo setup.can any help me out. :?
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By Ej2-B16a
- Fri Dec 28, 2007 8:34 am #35421 Dont get the VTEC head if your going turbo, Alot less of a hastle. Theres more to it then what you think, VTEC can make your turbo lag

What kind of turbo do you plan on getting?

Also on your "hp question" that all depends on your bugdet and your tune bud, You can make massive power but how long will it last thats the real question. If your going to turbo and staying w/ turbo I would prefer you to get your motor turbo ready, set correct compression meaning pistons, replace bearings, headgasket, then slap the turbo on there, but boosted at 8.5 psi, your LS which do about 140 i assume, you can probably put down a good 230-240? pretty safetly too
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By flyinryan122
- Fri Dec 28, 2007 8:51 am #35422 My friend has an Ls in his teg, from what i hear they love boost. his is pretty damn quick. another friend of mine bought a peakboost turbo kit for his, had court green tune it and is making 250hp on like 10-12psi i think i cant remember for sure. But he ran a 13 in the 1/4 and got kicked out for not having a helmet lol.
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By flyinryan122
- Fri Dec 28, 2007 8:55 am #35423
Ej2-B16a wrote: VTEC can make your turbo lag


Sorry but can you please explain this one to me...... I have never heard of vtec causing turbo lag.
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By Ej2-B16a
- Fri Dec 28, 2007 7:45 pm #35463 I was told this didn't find it out exactly for my self but it kind of made sence, It's not the same turbo lagg like sitting there waiting for it to spool, its spooling but then vtec engauges and almost caused like a shortage of power... It's hard to explain i don't feel like typing it all out, ill talk to this guy again and tell him to explain it to me exactly and ill get back to you on that


Im not saying DONT do VTEC turbo, I know many that have it and are making very nicer power, I was just told theres some issues w/ making VTEC & turbo work nicely toghter.
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By -EJ1- COUPE
- Fri Dec 28, 2007 9:10 pm #35483 my friends turbo ls teg made 267hp and 246 tq stock internals good tuning and 13 psi :thumb:
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By LowTEC-Derbo
- Fri Dec 28, 2007 11:37 pm #35489 whoever said that vtec makes your turbo lag is a total DOUCHEBAG.

the main reason to get a vtec head to have better flow. Better flow = more airflow per minute meaning more capability of gaining more power. yes. it will raise your compresion ratio but if you get deep dish pistons to offset the increase by the head, you can achieve ls/vtec at 9.0:1 or even lower. then you can boost freely. LS/VTEC is not a cheap engine to build boost on, but if built right, it can beat the LS turbo.


as far as setups goes, I've seen reliable daily stock LS run anywhere from 200whp to 300whp. I would think a safe area would be around 240whp for a stock LS. Make sure you get a replacement management system not an FMU and missing link. Tricking a stock ECU rather than chipping the ECU never made good power reliably.
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By flyinryan122
- Sat Dec 29, 2007 12:54 am #35498
LowTEC-Derbo wrote:the main reason to get a vtec head to have better flow. Better flow = more airflow per minute meaning more capability of gaining more power. yes. it will raise your compresion ratio but if you get deep dish pistons to offset the increase by the head, you can achieve ls/vtec at 9.0:1 or even lower. then you can boost freely. LS/VTEC is not a cheap engine to build boost on, but if built right, it can beat the LS turbo.
.



Lol thats what i was thinking. more flow, more hp to gain.
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By Ej2-B16a
- Sat Dec 29, 2007 1:25 am #35500 Just wait, Someone pointed out a good point which I and many other thought it was true, and if im wrong then sorry, Im still a turbo noob
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By LowTEC-Derbo
- Sat Dec 29, 2007 4:30 am #35523
Ej2-B16a wrote:Just wait, Someone pointed out a good point which I and many other thought it was true, and if im wrong then sorry, Im still a turbo noob



aftermarket VTEC cams are designed to have more power NA. cam specs of an aftermarket NA CAM is not always ideal for a turbo motor. This can cause what you would call an abruption of power. This doesnt necessarily make the turbo LAG. it just means that there is a huge difference in power between in vtec and not in vtec modes. This does not mean vtec lags you as because if VTEC was not present, the car would have less power in the vtec RPM range. :P
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By Ej2-B16a
- Sat Dec 29, 2007 9:48 am #35559
LowTEC-Derbo wrote:
Ej2-B16a wrote:Just wait, Someone pointed out a good point which I and many other thought it was true, and if im wrong then sorry, Im still a turbo noob



aftermarket VTEC cams are designed to have more power NA. cam specs of an aftermarket NA CAM is not always ideal for a turbo motor. This can cause what you would call an abruption of power. This doesnt necessarily make the turbo LAG. it just means that there is a huge difference in power between in vtec and not in vtec modes. This does not mean vtec lags you as because if VTEC was not present, the car would have less power in the vtec RPM range. :P


Something like that, Anyways idk why but I would just feel better off with LS turbo..
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By LowTEC-Derbo
- Sat Dec 29, 2007 9:53 am #35562
Ej2-B16a wrote:
LowTEC-Derbo wrote:
Ej2-B16a wrote:Just wait, Someone pointed out a good point which I and many other thought it was true, and if im wrong then sorry, Im still a turbo noob



aftermarket VTEC cams are designed to have more power NA. cam specs of an aftermarket NA CAM is not always ideal for a turbo motor. This can cause what you would call an abruption of power. This doesnt necessarily make the turbo LAG. it just means that there is a huge difference in power between in vtec and not in vtec modes. This does not mean vtec lags you as because if VTEC was not present, the car would have less power in the vtec RPM range. :P


Something like that, Anyways idk why but I would just feel better off with LS turbo..



cause you dont know how to build an LSVTEC turbo :P

LSVTEC turbo requires alot of researching and what not to figure out to make the most optimal setup.
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By Ej2-B16a
- Sat Dec 29, 2007 8:28 pm #35594 As I said, for the hastle.... I personally would rather just built LS turbo. Plus he seems kind of anxious about waiting even longer, If he gets the VTEC head he might as well replace everytime (timing belt etc..) which will be even more $ plus the VTEC head it self another 300-400$ ... You would probably be looking at 600-700$ in parts, To get the VTEC head on there correctly (buying waterpump, timing belt, new headgasket)

Anyways just my opinion, Which is all im giving I would jus slap the turbo..



p.s I am going VTEC turbo, Don't know if you forgot DERBO but im powered by a B16A lol, So I will have to deal with my VTEC

By JMan8108
- Sat Dec 29, 2007 11:05 pm #35610 Good God, Ej2- could you link me to a single post that I could read without thinking you are the single dumbest person on this board?

Back on topic

One of the reasons why a lot of people do LS-T setups versus LSVTEC-T setups is the ease of tuning. Granted a professional wont have a problem with either, but for a novice with a laptop and crome/uberdata VTEC is harder to make a solid map for. Low-Tec would obviously know more on the subject because of his experience with boost, but at any rate, research is the key. Know what you are doing before you do it.
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By LowTEC-Derbo
- Sun Dec 30, 2007 12:19 am #35612 Get this straight.

VTEC + TURBO has no problems with compatibility.


The only thing is the fuel map tables on a tune will have a high cam profile and a low cam profile fuel map. There is an extra setup to make sure the engagement on VTEC is smooth when tuning. Usually the tables overlap each other in the vtec engagement area to make the setup smooth. VTEC engagement is smooth and not a problem to a pro tuner. This is why I get my car tuned by my friend who has been tuning for years.





LowDOWN:


LS turbo = cheaper than LS VTEC turbo if you start off with only an LS.

LS turbo CAN be faster than an LSVTEC money for money.

but if the turbo mods were identical, the LS VTEC turbo will always win in power.
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