Hey guys. I'm looking to swapping out my JDM d15b vtec for a d15z1.

Do you think my P08 JDM ECU will run the d15z1 properly? I had a P28 with the d15b vtec, and it ran without a hitch, but something tells me that a P08 & P28 are more similar to one another than a P07.


Thanks in advance

 

d15b and d16z6 are nearly identical, so no surprise that the ecu's run pretty much the same. The d15z1 is a completely different beast with a lower redline, not nearly as much airflow and vtec-e, so my guess is it wont run very well on a p28.

I have a p07 you can have for cheap if you want... but I would advise against this swap h:

 

Why, Dave would you rule against it? I know going from 135hp to 92 is :hay:, but I'm putting the 67 Camaro back together, and would rather treat this car like a golf cart. o:



o:

Thanks for the reply
I'll take the P07, though h:

 

Well, first answer this: does your current motor run well?

If the answer is yes, then I wouldn't bother. The d15z1 is so gutless it actually hurts mpg because you have to run it harder just to keep up with traffic. I honestly think a z6 or d15b is capable of just as good mileage. d15z1 + Si/EX tranny might be tolerable, but you'll still have to keep it slow on the highway. :/

 

ugh. You sound like me when I'm trying to get people to understand that they don't need a new computer because the one they have does what the need. My d15b vtec is fine. :hs:

Well, my tranny is starting to go. It's got the dreaded 3rd gear grind, but it's getting worse. Since it's an Si I guess I think I'm not liking the 5th gear @ 2700rpm doing 65. I think I've brought this up to Tony, but how many guys actually take the 5th gear from a dx/lx and through it in the Si tranny? This is a highway car and I'd like to take advantage.

 

Well the problem with the vx/cx transmission is that yes, it does have a really tall 5th gear, which is a good thing... but it also has a really tall 3rd and 4th, which is a very very bad thing. It seriously feels like shifting 1st, 2nd, 5th, 6th, 7th. If you can rebuild your trans with a 5th gear swap, or find someone to do it for a reasonable price, I think that would be a much better solution.

 

Thanks, Dave. I've been dancing around that for a while and feel I should get it done before my tranny fails completely. I'm sure one of the O.G.'s has enough parts to Frankenstein one together for me.

 

or chip it & tune it to perfection... h:

 

Is it possible to get the 14" hx wheels to clear the calipers on my Si?

 

yes, 1/4 wheel spacers.