Possible ddp4 problem

[shell 96]

I installed my ddp4s. easy install took my time extra clean yada yada yada, i idled my injectors for a while everything seemed good, took it for a test ride 1mile total. got on it awesome came back parked checked for leaks while still running, no leaks good, well i was staring at my engine and it would shake a lil every so often in a definate pattern like a slightly loose line for like a two secs and then back to normal. so i checked all rpms and its the worst between 1000-1250 rpm it seems to wave in and out its fine from 1250 up what gives

TIA
Casey

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97, 2500 4x4 225k,5" stacks,KDP behind bars, BD tc, BD vb, 100 plate FF, 16.5, 4K GSK, 60lb springs, mack rack plug, afc springs, gauged, ATS exh, K&N w/tube, HTT 62/71/14 and DDP4s

[shell 96]

ive been thinking, ddps are supposed to be a little more touchy right? so what if the problem is my 4kgsk i installed at the same time as my old low quality injectors?

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97, 2500 4x4 225k,5" stacks,KDP behind bars, BD tc, BD vb, 100 plate FF, 16.5, 4K GSK, 60lb springs, mack rack plug, afc springs, gauged, ATS exh, K&N w/tube, HTT 62/71/14 and DDP4s

[shell 96]

problem only occurs when its cold once it hits 140 or so it starts.

Casey

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97, 2500 4x4 225k,5" stacks,KDP behind bars, BD tc, BD vb, 100 plate FF, 16.5, 4K GSK, 60lb springs, mack rack plug, afc springs, gauged, ATS exh, K&N w/tube, HTT 62/71/14 and DDP4s

[shell 96]

i meant only when engine is warm

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97, 2500 4x4 225k,5" stacks,KDP behind bars, BD tc, BD vb, 100 plate FF, 16.5, 4K GSK, 60lb springs, mack rack plug, afc springs, gauged, ATS exh, K&N w/tube, HTT 62/71/14 and DDP4s