Jim Wolf ECU

[franknitty69]

I was removing my ecu to get check engine codes and i say two big jim wolf stickers on it.

what kind of upgrades did jim wolf tech do to 1995 q45's?

there isn't any documentation anywhere. i can only find nissan vehicles with regard to jim wolf upgrades.

[Q45tech]

7300 rpm [vs 6900 rpm] rev limiter.Advanced ignition timing under WOT above 3,000 rpm.Leaner fuel injector timing under WOT above 3000 rpm.Less tip in timing reduction and faster recovery when you suddenly accelerate.

Generally they just remove half the safety amount built into oem software with the warning that premium fuel MUST always be used and base timing should not exceed 15 BTDC..........what they didn't consider is that todays premium may not be sufficient.

Since the cams/combustion chambers - internal shape/pistons are unchanged 90-95.......what ever research they did in 1991 is probably suitable for 90-95.........give or take.

AS engines age/wear one would need to be more meticlous in cleaning combustion chambers, changing plugs, keeping injectors clean and balanced in flow to avoid knock.

Very important to keep cooling system as new as ignition timing is decreased by 1 degree beginning at 194F, then an additional 1 degree for every 5F increase above 194F [199, 204, 209, 214F] as read and analyzed by ecu. [optimum coolant range is 174-193F]

Inside gauge won't move on a 10-30F variation but ecu knows!

[RobertsnewQ]

I have four or five JWT chips for the Q now, and they are all different. One is early - from 1992 or so, two are later (1995 and 1999) and one is unknown.

Their tunes become more agressive in LATER files, which is unexpected.

They raise the VTC turn-off RPM, rev limiter (7200, though, not 7300), remove the speed limiter, and as Dennis said, advance timing at high load levels. However, the advance reaches all the way down to 400RPM, petering out around 2000, and increasing again to 7000. Low-load timing stays the same on all JWT tunes I've seen.

They lean the fuel map in the higher load/rev ranges, but richen it up in the midrange. The OEM ECU has two fuel maps, a knock and a no-knock, and JWT replaces them with one (based off the OEM no-knock map).

Should be good for almost 20 HP at high RPMs, but there is room for improvement.

[heywier427]

are you willing to part with one?

[franknitty69]

Nah, i spoke with a tech from jwt and they let me know the exact mods done to the car based on the vin and pop code on the chip.

i think i'll keep this, it seems that my q is more powerful than let on by previous owner.

after i replace the o2 sensors and the knock sensors we should be good to go.

[sheadee240]

I have four or five JWT chips for the Q now, and they are all different. One is early - from 1992 or so, two are later (1995 and 1999) and one is unknown. .

Do you have one to sell me for my 94 Q45t tcs

Buy the way did you have your car at a locksmith in Hartford CT on New britian Ave last week?

[franknitty69]

Do you have one to sell me for my 94 Q45t tcs

Buy the way did you have your car at a locksmith in Hartford CT on New britian Ave last week?

Nope wasn't me. I live in columbus, oh. My Q is black on black. I don't have a digital camera right now, so no pics. But don't fret, i'm getting one for xmas. so i'll put up a barrage of pics.