allricedout

i am needing a little more pep on my eh2, and i have a few questions.

i was wondering if i need to find a larger diameter throttle body so the charge piping would fit. And would one fit from a dx, vx or si directly, ?

or would i have to do a z6/ y8 head swap? i really dont want to until i blow a HG.

i only plan on making ~150- 175 whp and im in the proccess of peicing together the setup. so far i have a t3/t4 flanged turbo, boost guage, and im ordering the piping and down pipe online with the intercooler, silicone hoses and clamps.

then im getting a walbro 225 FP.

then a tune.

i am going to do a compression test today and ill post the results.

SO is there anything else i need to do?

o yeah, ive read every d15b8 thread and learned little, but some.

97grnrs

is that the 8V engine? and also the TB i dunno if it bolts up . i would change the whole mani or just get a silicone reducer coupler to fit.

zexxbo

dont buy ss auctochrome. im not sure that dx, vx, or si throttle bodies are any bigger and if they are, i doubt its a noticeable size difference to fit large sized charge piping. if you want some more pep, get a 3" downpipe and 3" exhaust.

allricedout

please dont ******* repy if you dont know anything..

yes the d15b8 throttle body is smaller....

can anyone offer some words of wisdom?

97grnrs

what is the question here? beside the TB .. which is smaller and i would swap the whole mani. and the b8 isnt that the 8v engine?

zexxbo

im telling you if youre ordering your charge piping and intercooler online, dont order ss autochrome because they are garbage. the si throttle body MIGHT be 1-2mm bigger if that, but thats not enough of a difference to fit larger charge piping. maybe if you could read, it would be to your benefit rather than being an ungrateful ***. and heres what i said:

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by zeimbo &raquo;</TD></TR><TR><TD CLASS="quote"> if they are, i doubt its a noticeable size difference to fit large sized charge piping. if you want some more pep, get a 3" downpipe and 3" exhaust. </TD></TR></TABLE>

allricedout

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 97grnrs &raquo;</TD></TR><TR><TD CLASS="quote">... and the b8 isnt that the 8v engine? </TD></TR></TABLE>

yep were talking about the 8 valve engine, that came in the cx hatchback.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by zeimbo &raquo;</TD></TR><TR><TD CLASS="quote">dont buy ss auctochrome. im not sure that dx, vx, or si throttle bodies are any bigger and if they are, i doubt its a noticeable size difference to fit large sized charge piping. if you want some more pep, get a 3" downpipe and 3" exhaust.</TD></TR></TABLE>

well i have a 2.5" cat and back exhaust already... i really dont see any difference between a name brand IC and charge piping versus no-name chinese made....

as far as throttle bodies, i have searhed and found nothing on them... i guess ill just have to get an adaptor and make it work.

so i guess my question on the throttle body has been answered ( but need more clarification).

So now i am interested in other peoples experience w/ turbo'n the d15b8.... numbers and setups etc? cuz 75 hp isnt going to cut it.

ProjectEG8

if it means anything I compared my d15b7 throttle body and my b16a2 throttle body not much of a difference, but right now I'm running ZC throttle body, which is about the same size as the b16a2. So you might want to try B7 throttle body I think its the same size as SI and EX.

allricedout

^well i was thinking about getting a larger diameter TB but if an adaptor hose ( 2.5" CP down to cx"? TB) will work.... then i see no point.

zexxbo

ok well if you want some more 'pep' or horsepower, upgrade your exhaust to a 3" and make sure to get a 3" downpipe and youll see a nice difference.
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by allricedout &raquo;</TD></TR><TR><TD CLASS="quote">i really dont see any difference between a name brand IC and charge piping versus no-name chinese made....</TD></TR></TABLE>
well i guess thats why youre here asking for help and for peoples opinions rather than just doing what you wanna do. go read all the threads on h-t about ss autochrome and how bad it is if you dont believe me. im not saying all the taiwanese stuff is bad, im saying that ss autochrome is bad and i can speak from experience with more than a handful of friends and customers. if you want to get cheap, at least go with the obx stuff or buy used. and yes, you will most likely need an adaptor hose to go from your throttle body to your charge piping if your charge piping is 2.5" unless you go with a larger sized aftermarket or bored throttle body.

97grnrs

take that head off and stick a 16v on it.. i did this when i used to have a cx hatch.. that alone will help alot.. and swap ecu too.. and some ss auto stuff is ok.. i run one of the turbos and a mani which i reinforced and i guarentee car will put down 11's all day .

allricedout

just did a compression test and 1-4 were 135.... all within a few pounds. so it seems healthy, now im just waiting on the piping and intercooler.

has anyone else tried turbo'n a cx? im just looking for experiences on how well it revved and did you run into any problems... and what was the first thing to let go? i hear the rods on d15 dont hold up under a lot of boost.

97grnrs

ive boosted stock d15's and had no prob . but the 8v your not gonna get much out of..just because its an 8v , heads are cheap. u can find a 16V si head for like 30 bucks prob.. id switch if i was u cause the low rev limit and stuff is really gonna hold u back..

allricedout

^ yea i know i can find a vtec head for cheap but i didnt really want to swap em then 50 miles later i blow a head gasket or something else and have to pull it off agian. BUT i do realize that keeping it is a bottleneck for flow.

my rev limit is at 6200 right now... i know this cuz i did a cluster swap, along with a black interior. and i would like to be at full boost at 3k, is that possible?

allricedout

97grnrs.... when you did the head swap, did u use a different intake manifold and everything?.... also what was ure turbo setup and how many pounds of boost did u use?

allricedout

bump

allricedout

bump for any experience with the 8v

allricedout

bump... last time

97grnrs

when i swapped the head i used a d16a6 head, non vtec.. then later i changed it to a vtec head .. i used the si intake mani and tb..