amh0001

Hi there,

I have a CRX SI, with SOHC ZC using the stock SI tranny. I also have a homemade turbo kit that ive built using a T 25 turbo. Now I noticed that on the freeway around 65-75 mph I am constantly at a high rev of 3500rpms.

My question is wont that many RPMs keep the small T25 turbo at almost full boost while just crusing on the freeway?

So I was considering getting CRX DX converting to MPFI then boosting, or Just getting the DX tranny for the longer gears then boosting. Any Info would be great thanks

~Adam

blackccoupe

imo i think u will be fine depends what throttle position ur at that makes the turbo spool

amh0001

Anyone actually have this set up?

Casey

iTrader: (5)

youll be fine, you wont be making much if any boost just cruising. you actually have to get into the throttle a little bit. my friend had the setup, same tranny and turbo, and his did fine.

Burke

i had a t25 on a y8 with ex tranny. short like you si. well, i would tach like 4k at 80 or so. still made about 32-35 mpg on the highway

mstolars

Yeh, I had pretty much the same setup, but on a d16a6 SOHC. At the high rpms on the highway, boost just came in a lot faster with that tiny turbo. Just tap the throttle a little and boost, it was nice, no need to downshift to pass anymore

CelicaGT-S

The dsm 1g turbo manifold fits the d series engine right?, now with that in mind is the t25 the turbo to go with.?

nonvtecD

this is Honda-Tech Forced Induction forum, read up

DSF

I had a CRX with a stock Y7 boosted with a T25 and a DX tranny. In short, I HATED the DX tranny. The T25 liked low to mid rpms (2500-5500) and above that you could feel it just wasn't as efficient. So, "being in boost longer" with the DX tranny made me slower . Keep the Si tranny.

Oh, and boost is load dependant. If you don't want to boost on the highway, stay off the gas . And I averaged 34-36mpg with my CRX and a high of 40mpg.