The 3.5 conversion in my TF if complete. I used my 3.0 ECU as it was easier then playing around with changing to the auto TJ ECU, loom and BEM meaning allot more work and having to reprogramme keys was saved.

http://img374.imageshack.us/img374/377/tf35od2.jpg

But down to the interesting parts, the power figures. :P A standard run without touching the ECU (3.0 remember) produced 110kW@ the wheels (what my old auto TF pulled with catback and unichip). Now thats not bad considering I'm running the stock 3.0 exhaust aside from a crappy tri-flow 2.5" rear muffler. The initial run showed that it was running really rich, around 10.5:1 in the top end.

So I decided to get the Unichip (from the previous car) installed and tuned instead of waiting to get a full exhaust system later down the track (mostly due to lack of immediate funds lol ). Once fuelling was pulled back pretty much across the range, and a bit of timing advance at the low end and a bit more at the top end, a final figure of 125kW was achieved. So a gain of 15kW at the wheels just buy pumping in less fuel lol .
Hoping to get it closer to 135kW with a full exhaust system and retune.

Drive-ability wise, you can really notice allot more part throttle response and you defiantly notice the extra torque. To anyone with a 3.0 considering this conversion, I can highly recommend it.

awsome work :D

so is it manual or auto now ??

awsome work :D

so is it manual or auto now ??

I kept it manual ofcourse...:D I doubt I'll own another auto ever again. lol

Ohh and I ran into the drive shaft issue you where warned about!!!

ohh true, wonder why i didnt have that issue :nuts:

now just slap on some nos :cool:

Well done! Sounds nice.

Out of interest, if a car (yours in this case) has 125KW@ the wheels, is there an easy calculation to estimate the KW at the engine/flywheel or wherever it is they do the other measurement.

yes most ppl say hp at the wheels is close enough to kw at the fly, so approx 166kw

but there is no way to tell unless you pull the motor out and run it on an engine dyno, thats just a guide :)

yeh i thought the same as wat andrew just said.

but y would u care wats at the engine wen u can compare alot easier atw

You can only work out a rough estimate really. As said you need an engine dyno for a propper figure. But I'd say I'm not really runing more then the factory 163 or so kW at the flywheel. My 3.0 exhuast is holding me back....plus the restrictive rear muffler I have.

On average manual magnas have roughlly 26-28% driveline loss, so 163kW - 27% = 118kW (most get between 115-120kW at the wheels I think). So I'd have roughly 170kW at the flywheel.

I have a Manual 3.5 TH Sports... and I only pull 115kw (stock)... so would it be safe to say that the extra 10kw is almost solely from the UniChip?

I have a Manual 3.5 TH Sports... and I only pull 115kw (stock)... so would it be safe to say that the extra 10kw is almost solely from the UniChip?

Don't forget that there is a varience between dynos. So we can't "realy" compare power outputs, as 115kW on your dyno readout, might have been more or less on the dyno my car was tuned on (in the end thats what a dyno is for, tuning).

I have a Manual 3.5 TH Sports... and I only pull 115kw (stock)... so would it be safe to say that the extra 10kw is almost solely from the UniChip?

Yep, I'd say so. I picked up 15kw through the mid range and only 6kW peak after fitting a unichip...to an auto with RPW headers. Manual would run a bit leaner, so it could extract a couple of extra kw's.

Edit: But as Phonic said. Dyno's a for tuning only and hard to compare.

Yep, I'd say so. I picked up 15kw through the mid range and only 6kW peak after fitting a unichip...to an auto with RPW headers.

We can't compare power outputs unless we tested both cars on the same dyno on the same day. Also my 3.5 was out of a TJ Sports, so it had more power from the factory then the TH 3.5.

We can't compare power outputs unless we tested both cars on the same dyno on the same day. Also my 3.5 was out of a TJ Sports, so it had more power from the factory then the TH 3.5.

wasnt the only difference the rear muffler ??

wasnt the only difference the rear muffler ??
yep... 8kw at the flywheel from a different muffler.

cheers,
.wook

Don't forget the TJ had an upgraded cam profile

yep... 8kw at the flywheel from a different muffler.

cheers,
.wook
Only between TJ exec and TJ sports/vrx.
Compare a TH (147kw) engine to a TJ (150kw) and then a TJII (155kw), all sports/vr-x TJ got the 155kw engine with the upgraded muffler.

phonic, if ya dont mind me askin, all up, how much did the conversion cost ya?

phonic, if ya dont mind me askin, all up, how much did the conversion cost ya?

All up cost me about $2500 including installation and tuning of the Unichip (witch I supplied) and the cost of the motor (witch I was lucky enough to pick realy cheap).
It would have been a touch cheaper if the 3.5 had all the ancillary brackets on it (mine didn't), probably cost around $1000-1200 including new fluids etc, but excluding cost of motor.

So I'll have a 3.0 up for sale soon that has a 30K old timing belt and lifters in it, cheap.