
Two goals in eight crazy second half minutes and a late Dean Bowditch strike gave Ipswich maximum points in a free-flowing, end-to-end contest at Loftus Road.
Trailing to Kevin Gallen's opener, a controversial Simon Walton spot-kick and a simple close range finish from skipper Jason De Vos gave Jim Magilton's men a 2-1 lead.
Bowditch rounded off a great away day for the Tractor Boys with an 85th minute header, to seal Jim Magilton's men their first win of the Championship campaign.
Rangers had earlier taken the lead when Gallen poked home from close range on 57 minutes, but in truth the R's crept back into their shells thereafter and Ipswich were good value for their win.
It was goalless at the break, despite a flurry of goalscoring opportunities at both ends.
Ipswich striker Billy Clarke went closest to breaking the deadlock on 36 minutes, sending a fearsome shot against the face of the crossbar from a tight angle.
Rangers were by no means second best though, with Lee Cook at the heart of most of their positive play.
But it was Dexter Blackstock who squandered the R's best opportunity of the half, firing straight at Lewis Price in an end-to-end contest.

Gary Waddock was forced into two changes from the side which drew 1-1 at Preston on Saturday.
With Martin Rowlands and Gareth Ainsworth both failing late fitness tests, skipper Kevin Gallen was handed his first league start of the campaign on the right wing, while Steve Lomas was recalled in centre midfield.
Ipswich were minus the services of the injured Nicky Forster and Sam Parkin, who today joined Luton Town in a £340,000 deal.
The match was only 60 seconds old when Rangers fashioned their first attack.
Ray Jones played a neat one-two with Gallen and the returning skipper saw his shot blocked by Alex Bruce.
Half-hearted appeals for a handball were waved away by referee Mr Mason, as the R's opened in style.
The curse of the Sky Sports cameras clearly wasn't playing on the minds of the R's players in the opening exchanges and when Nicky Ward was gifted time and space on the edge of the box, only another fantastic block by Bruce prevented the Aussie from registering the hosts' first shot on target.

Despite their precarious league position, Ipswich weren't here to defend for 90 minutes and when Mark Noble sent in an in-swinging free-kick on six minutes, Damion Stewart was in the right place at the right time to clear after Paul Jones failed to catch a routine cross.
Play soon switched to the other end; with the lively Ward sending a piercing drive a yard over the bar after a neat interchange with central midfield partner Lomas.
Cook soon got in on the act too, sending a sweet curling effort into the arms of the perfectly positioned Lewis Price.
Cook soon turned provider on 16 minutes, sending an inch-perfect cross into the box, which Jones headed high and wide under pressure from De Vos.
Clarke's neat turn and shot forced Jones to scramble across his goal two minutes later, but in truth, that was as good as it got for the Tractor Boys early on.
Clarke had the bit between his teeth by now and when Matthew Richards sent him in on the left flank in the 20th minute, his speculative half volley from an acute angle brought the best out of Jones, who tipped the ball wide for a corner.
As the clock hit the 30 minute mark, there was slight cause for concern for the R's when Blackstock went to ground under another heavy challenge from De Vos.
Thankfully for Waddock, his £500,000 signing from Southampton soon returned to the fray after lengthy treatment.
The goal the home faithful were crying out for should've arrived on 34 minutes.
But after Blackstock was sent clean through by strike partner Jones, his weak effort was easily palmed to safety by Price.
The game was really beginning to open up and De Vos squandered an even easier chance for the visitors a minute later, shooting straight at Jones from the edge of the six-yard box.
The Tractor Boys were growing in statute as the half wore on and from their very next attack; Clarke rattled the face of the crossbar from 10 yards after beating Zesh Rehman to Alan Lee's precise through ball.
The Sky Sports viewers were being treated to a feast of end-to-end football by now and when Cook sent in a teasing cross from an unorthodox position on the right flank, first Fabian Wilnis, and then Jones, failed to get the crucial touch that would've surely resulted in the opening goal of a free-flowing contest.

The second half took time to spring into life, but when it did, it was Ipswich loanee Mark Noble who took the initiative.
After picking up the ball on the right flank from Lee, the West Ham United midfielder cut inside before stinging the palms of Jones at his near post.
Ipswich's positive start failed to deter the R's though and when Blackstock sent in an enticing cross from the left flank in the 57th minute, Gallen had two bites at the cherry before poking the ball past Price from little more than a yard.
It may've been scrappy, but Gallen - nor his team-mates - could care less.
Unfortunately, all their hard work was undone a minute later when Damion Stewart was adjudged to have upended Gavin Williams in the box and Walton fired the ball under Jones from the spot for his first goal in an Ipswich shirt
The penalty award looked a harsh one in real time and the Sky Sports cameras only served to confirm what was a shocking decision by referee Mr Mason.
Buoyed by their goal, the visitors were beginning to enjoy the lion's share of possession and on 66 minutes, Harding forced Jones into a fine tip over, before Noble pummelled the right hand post with a stunning volley.

Rangers didn't heed the warning though and from the resultant corner, De Vos fired home at the back post to send the Ipswich fans into raptures.
Waddock threw caution to the wind, with the introduction of Shabazz Baidoo and Marc Bircham seeing the R's switch to an attacking 3-4-3 formation.
A speculative up-and-under from Gallen caused panic in the Ipswich box, with Jones and then Rehman seeing their efforts blocked.
But it was Ipswich who struck gold five minutes from time courtesy of second half substitute Bowditch.
The Town striker gave Jones absolutely no chance, sending his powerful back post header past the Welsh number one from the edge of the six-yard box.
QPR: P Jones, Rose, Rehman, Stewart, Milanese (Baidoo 76), Gallen, Lomas (Bircham 71), Ward, Cook, Blackstock, R Jones.
Subs: Cole, Kanyuka, Oliseh.
Scorers: Gallen 57
Bookings: Bircham 73
Ipswich Town: Price, Wilnis, Richards, De Vos, Bruce, Williams (Currie 90), Lee (Haynes 86), Noble, Walton, Harding, Clarke (Bowditch 76).
Subs: Naylor, Sito.
Scorers: Walton 59, De Vos 67, Bowditch 85
Referee: L S Mason
Attendance: 10, 918
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