Any ECU plug in replacements for more power? - Honda Prelude Forum

aaron7 · 10-05-2010, 09:39 AM

92 w/ H23

I know with my Jeep, my Camaro, and my MR2 there were companies (Hypertech and such) that made drop-in chips to boost power, change shift points, etc.

Anything like that for the Prelude? Or is it all programmable stuff?

petern101 · 10-06-2010, 07:15 PM

programmable ecu's require a p28 (or similar) ecu.

you can also buy a piggyback.

I think you should research more. how did you know you got more power with those other drop in chips.

they normally don't give you any power unless you get a tune

aaron7 · 10-07-2010, 05:27 AM

Huh? The drop in chip IS the tune... that's the whole point of them.

So I take it one doesn't exist for this car?

Tee-Dot · 10-07-2010, 06:05 AM

None exist, and if anyone tries to tell / sell you otherwise, don't listen to them.

I used a Diablosport handheld w/ my Lightning, which allowed for modification of shift points, firmness, redline, speedo calibration, a/f, and a few 'canned tunes'. My actual tune came from an outside vendor.

Of course, you can't do anything like that w/ the Prelude.

aaron7 · 10-07-2010, 06:32 AM

Ok that's what I thought.

Is there much more power to be made with the H23 on a standalone? A PnP MegaSquirt or one of those Hondata do-dads I keep hearing about?

petern101 · 10-07-2010, 07:42 PM

You want more power with a SI? Drop in a h22.

merlinbadman · 10-08-2010, 03:42 AM

Yeah there are chips for the 4G. On PreludeUK there are copies of the "Spoon" chip available for JDM 4G's. The same guy sells a chip that originated in the US that also works on UKDM/USDM's. Both are reportedly proven to give gains.

Chec it out:

Honda Prelude UK :: View topic - Prelude Remapped chips-JDM Spoon V2 Auto/Manual+UKDM+Chrome+

Tee-Dot · 10-08-2010, 06:57 AM

^Lies.

aaron7 · 10-08-2010, 07:00 AM

Looking at that link it appears to be VTEC only anyways :/

petern101 · 10-12-2010, 08:17 PM

Quote:

Originally Posted by Tee-Dot

^Lies.

he's right, apparently you deleted your little post (which i can see) but it looks like you got your foot stuck in your mouth.

unless it's a piggyback or tunable ecu, doesn't matter. Oh and you have to actually get it tuned to make a difference on paper.

merlinbadman · 10-13-2010, 06:19 AM

Quote:

Originally Posted by petern101

he's right, apparently you deleted your little post (which i can see) but it looks like you got your foot stuck in your mouth.

unless it's a piggyback or tunable ecu, doesn't matter. Oh and you have to actually get it tuned to make a difference on paper.

Yeah I did delete my post asking the guy to explain why the existence of them is a lie, but deleted it as I couldnt be bothered with the rant that would have followed

. Please note that I nowhere said "go get one of those chips", I was stating that they were in existence, like the OP asked.

And since petern101 feels the need to highlight this, for you who wondered what i said, I said it wasnt like it was some guff resistor mod.

merlinbadman · 10-13-2010, 06:33 AM

Anyway i guess I'll findout for myself as the JDM 1993 2.2 SI VTEC track car I have just bought last weekend came with a chipped ECU which takes off the 112mph limiter and lowers VTEC to 5K. These chips are apparently a very common way of delimiting JDM imports in the UK. I already have a Crome P28 ECU that I bought for my 5G

.

aaron7 · 10-13-2010, 07:04 AM

Guess I'll go with a plug in MegaSquirt haha

It'll be a winter project... I'll post up my progress in a new thread when I get to it!

Any chance of finding some H23 maps that I could modify? Or will I have to wing it?

petern101 · 10-13-2010, 10:47 AM

1. you said "proven gains" I highly doubt that. Lowering the vtec engagement point isn't always going to make power go up. You need supporting mods for it. Which brings me too...

2. You still need to tune. There is no way you can just guess or the seller guess what mods you have and tune for that while your car isn't on a dyno.

3. A better method to removing the limiter is what you did for your 5th gen, not buy buying this. there are just too many uncertainties for me to run on my own car

4. h23 maps, probably not but buying a tuneable ecu and installing while at the shop / tuning it will yield you the best results. I would by no means "wing it" on maps / timing / fuel.

aaron7 · 10-13-2010, 10:58 AM

I 'winged it' on my MR2 with great results. Just started with the base 350 V8 map that all MegaSquirts come with and went from there!

I can't afford to pay someone to tune the car AND pay for dyno time... if this was a race car or something maybe... its just the DD.

jsmooney · 10-13-2010, 11:15 AM

get a S-AFC....if you can find one to tune your current ECU

merlinbadman · 10-13-2010, 01:20 PM

Since your picking apart what I said, I'll bite

.

Quote:

Originally Posted by petern101

1. you said "proven gains"

I said that there are reportedly proven power gains, I have had no first hand experience with them. I have only owned a 4th gen 3 days. But I was aware the chips existed as there are many on PUK who use them.

Quote:

Originally Posted by petern101

2. You still need to tune. There is no way you can just guess or the seller guess what mods you have and tune for that while your car isn't on a dyno

The chips have a base map done by Spoon for JDM engines, I have a JDM engine. I agree that yes you shouldnt slap sh1t in your car that isnt tuned for it. But the car I have just bought came with it already in so not much I can do about it now.

Quote:

Originally Posted by petern101

3. A better method to removing the limiter is what you did for your 5th gen, not buy buying this. there are just too many uncertainties for me to run on my own car

Because P28 was bought from Speed Innovations with a general USDM H22 base map I have never installed it (I have a UKDM H22a8), I need to take it to a guy who tunes with Crome.

In the next couple of weeks Im taking my 4G on the dyno, if I can borrow a stock JDM P13 ECU I will get a comparison done between the two. Regardless of the result I'll post them here.

petern101 · 10-13-2010, 07:10 PM

Quote:

Originally Posted by aaron7

I 'winged it' on my MR2 with great results. Just started with the base 350 V8 map that all MegaSquirts come with and went from there!

I can't afford to pay someone to tune the car AND pay for dyno time... if this was a race car or something maybe... its just the DD.

seriously? You can't afford tuning, probably shouldn't mod yet.

How do you know you gained with real numbers other than "hey I feel like i'm going faster so I must be"

aaron7 · 10-14-2010, 05:29 AM

Quote:

Originally Posted by petern101

seriously? You can't afford tuning, probably shouldn't mod yet.

How do you know you gained with real numbers other than "hey I feel like i'm going faster so I must be"

lol if you're affraid to tune yourself and get your hands dirty maybe YOU shouldn't be working on cars. Sorry to break this to you but not everyone can afford $500 a shot to have someone tune their car. And not like every tune can be done in one sitting either.

And how do I know I gained numbers? How about quarter mile times? How do I know I did it right? That's what gauges are for.