twin turbo help - Page 3

what about a manual swap?

i thought about it and wasn't sure if it would be worth it to go that route or to drop in a high stall tourqe converter...
hmmmmmm.... so many choices...

I think the manual would be better in general because of the shorter gear ratios vs an auto more power man, more power! ^_^

yeah i'm deffinatly into more power... lol but since i want to turbo it, should i switch it to stick first or does it matter?

doesnt really matter in the end, both require research if youre going to do it yourself and both require a lot of money to have someone else to do it ^_- but turbo first, will be easier to install

hehe all depends on ur tastes... i love my manual because i slam almost all my power strait to the ground... ur loosing power out of ur turbo if u push the power out threw automatic....

you lose power out of a turbo just from the fact the cars a vtec, any way you look at it, you can either goto a turbo first, get use to that, then put the standard on, have even more power, or just get a slight gain from doing the swap, then add the turbo and have a crazy amount of power that you most likely wont be able to handle, equal stages vs drastic changes are better usually ^_-

alright i've decided to get the turbo first. btw my cars isnt v-tec... i don' t know weather to be happy or sad about it... pro's and con's i guess. lol anyways i'm hearing alot about something called a hondata... sumthing or another... and it goes with turbos. i know its a computer but whats it for?

Hondata allows you to tune your car's air/fuel ratios, adjust your vtec, rev limiter and speed governor, boost and nitrous control, and basically anything you'd want to control. It's really nice for boost because it can sense up to 11lbs on the basic models they have (more if you get a better MAP sensor), whereas your stock ECU can't read over like 1lb. It also protects you from potentially destroying your engine by exceeding what your fuel system or engine can handle.

Well, looking into I found a pretty informative page on their site. They can explain it better than I can:
http://hondata.com/featuresboost.html

Stock should be able to read about 2 - 3psi, the reason i say this is because if your going 100 miles an hour i think thats around 2 psi depending on how your intake is setup ie ram air style intake

but yes, after market ecu's are very important because other then the fact it evens everything out, it helps with the deficiencies of the stock ecu.

thanks for the linkl it really helped! I still don't understand what a map sensor is... and do i need to have a v-tech engine for this setup to work? also with bigger injectors what is the stock size and what is a common size for boosted applications?

The map sensor is right top of the throttle body.
No you dont need vtech, and you wont find a turbo that is vtech only, but vtec in general is the reason turbo's dont spool up at lower rpm's and why you hear people complain about turbo lag on hondas, cause vtec kicks in and that larger lobe is spinning allowing more exhaust through which is why a t3/04 turbo usually kicks in at around 4000rpms. Vtech is usually set at 4250ish for stock, changing the ecu and having vtec kick in say at 3250 would help the turbo spool faster.
If you just use a few pounds of boost (around 6psi) you wont need to change your injectors, but if you change your ecu upgrade your injectors too. Stock injectors are what, 250 cc? maybe a little bit less, not sure on that one.

Keep in mind, this is just my opinion tho, its going to be the same route im going, when i upgrade my ecu im going to upgrade the injectors and fuel rail.

is there any other company for high flow fuel rails that are good besides aem?

*Oh, and is the hondata considered an ECU or does it piggy back the stock computer?*

I installed an OBX one and I've had no problems with it at all. Looks good and it seems to get more fuel into the motor so I'm a happy camper, nevermind that it was way less than an AEM one.

Hondata is a rechip for your stock ecu. There are also stand alone units which have the s100, s200 tags which i believe still use one or two of the plugs from the ecu to run everything

so are these neccisary (SP?) or optional? do you recomend them if they are optional?

Optional to a point. Recommended before that point because there are some things that you cant account for relying on the stock ecu. Plus it it makes the possibility of premature detonation extremely unlikely when youre running low boost. But as long as the system is setup right, its unlikely for that to happen. With the upgraded ecu installed your car will perform better on low boost because it will have better fuel maps then the stock system, and timing will be controlled properly on the ecu.

are the units vehicle or engine specific or are they pretty general in there applications?

i believe its ecu/engine specific, Most fuel maps will be defined based on max rpm and displacement of the engine, then different injector types will be defined because obviously the larger the injectors the more fuel that can be put in and the shorter the amount of time that the injector needs to be open, in turn the larger the displacement the more fuel and air that can be crammed in.

But you will see at the hondata site the S series modules are for civics and preludes of certain ecu types, like mbo i believe said that he has a p06 and a full s200, downside is its probably got fuel maps defined for a h22 engine which runs a bit different from an f22.

So, if you plan on changing your ecu, do research on the specific ecu's you might want to drop in your car, or find out if it would be better to just chip your current ecu.

what about turbo timers. are they neccesarry?

not really, but recommended, you want to give your turbo time to cool down, if your a person whos willing to sit there for a few minutes and let the car idle, then you dont need one, otherwise its something that keeps the engine running for a set amount of time based on how hard youve run the car, and is suppose to prevent the car being taken without the key, etc yada yada so, let your car idle a while every time and save some money ^_^

They are cool though. I installed one in my car just a while ago and whenever I go to park my car and get out, lock it, and walk away with the keys in my hand, everyone looks at me like "dude, your car is still on." Just another way to turn heads I suppose while making sure your cooling that turbo down.

Thats pretty cool.... do most turbo apps. have boost controllers or are they self checked?

The purpose of a boost controller is to increase boost from the base external wastegate spring.
IE: lets say you have a 7 psi spring in your wastegate, the boost controller will give you the ability to increase that 7 psi to that max capable for the turbo. Good if you have everything need to do that properly, bad if you dont have your engine build up and dont have high octane gas ^_-
If you want a set psi that doesnt change, you dont need a boost controller, if you want to be able to change it, then get something like a 1 psi spring and setup your boost controller so you will offically have some gas economy when your running at higher rpms.

A boost controller will not lower the boost below the naturally spring of the wastegate if you have 7psi and want less, the only way to lower it is to replace the spring.